diff --git a/CHANGELOG.md b/CHANGELOG.md
index 489e99d2..8138ab4f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@
 - **FIX**: support all line ending types for USB load
 - **FIX**: fix `STATE` not accounting for `DEVICE.FLIP`
 - **FIX**: fix MIDI IN ops channel number being off by 1
+- **FIX**: improve `TR.P` accuracy
+- **FIX**: fix `KILL` not stopping TR pulses in progress
 
 ## v4.0.0
 
diff --git a/docs/whats_new.md b/docs/whats_new.md
index 05c4b005..61bb7d4b 100644
--- a/docs/whats_new.md
+++ b/docs/whats_new.md
@@ -20,6 +20,8 @@
 - **FIX**: support all line ending types for USB load
 - **FIX**: fix `STATE` not accounting for `DEVICE.FLIP`
 - **FIX**: fix MIDI IN ops channel number being off by 1
+- **FIX**: improve `TR.P` accuracy
+- **FIX**: fix `KILL` not stopping TR pulses in progress
 
 ## v4.0.0
 
diff --git a/module/main.c b/module/main.c
index 4f264358..7e01b6ff 100644
--- a/module/main.c
+++ b/module/main.c
@@ -133,6 +133,7 @@ static softTimer_t monomePollTimer = {.next = NULL, .prev = NULL };
 static softTimer_t monomeRefreshTimer = {.next = NULL, .prev = NULL };
 static softTimer_t gridFaderTimer = {.next = NULL, .prev = NULL };
 static softTimer_t midiScriptTimer = {.next = NULL, .prev = NULL };
+static softTimer_t trPulseTimer[TR_COUNT];
 
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -150,6 +151,7 @@ static void monome_poll_timer_callback(void* obj);
 static void monome_refresh_timer_callback(void* obj);
 static void grid_fader_timer_callback(void* obj);
 static void midiScriptTimer_callback(void* obj);
+static void trPulseTimer_callback(void* obj);
 
 // event handler prototypes
 static void handler_None(int32_t data);
@@ -1046,6 +1048,36 @@ void tele_tr(uint8_t i, int16_t v) {
         gpio_set_pin_low(pin);
 }
 
+void tele_tr_pulse(uint8_t i, int16_t time) {
+    if (i >= TR_COUNT) return;
+    timer_remove(&trPulseTimer[i]);
+    timer_add(&trPulseTimer[i], time, &trPulseTimer_callback,
+              (void*)(int32_t)i);
+}
+
+void tele_tr_pulse_clear(uint8_t i) {
+    if (i >= TR_COUNT) return;
+    timer_remove(&trPulseTimer[i]);
+}
+
+void tele_tr_pulse_time(uint8_t i, int16_t time) {
+    if (i >= TR_COUNT) return;
+
+    u32 time_spent = trPulseTimer[i].ticks - trPulseTimer[i].ticksRemain;
+    timer_set(&trPulseTimer[i], time);
+    if (time_spent >= time) { timer_manual(&trPulseTimer[i]); }
+    else {
+        trPulseTimer[i].ticksRemain = time - time_spent;
+    }
+}
+
+void trPulseTimer_callback(void* obj) {
+    int i = (int)obj;
+    if (i >= TR_COUNT) return;
+    timer_remove(&trPulseTimer[i]);
+    tele_tr_pulse_end(&scene_state, i);
+}
+
 void tele_cv(uint8_t i, int16_t v, uint8_t s) {
     int16_t t = v + aout[i].off;
     if (t < 0)
@@ -1237,6 +1269,11 @@ int main(void) {
     aout[2].slew = 1;
     aout[3].slew = 1;
 
+    for (uint8_t i = 0; i < TR_COUNT; i++) {
+        trPulseTimer[i].next = NULL;
+        trPulseTimer[i].prev = NULL;
+    }
+
     init_live_mode();
     set_mode(M_LIVE);
 
diff --git a/simulator/tt.c b/simulator/tt.c
index 52706e7b..b3a436a4 100644
--- a/simulator/tt.c
+++ b/simulator/tt.c
@@ -30,6 +30,21 @@ void tele_tr(uint8_t i, int16_t v) {
     printf("\n");
 }
 
+void tele_tr_pulse(uint8_t i, int16_t time) {
+    printf("TR PULSE i:%" PRIu8 " time:%" PRId16, i, time);
+    printf("\n");
+}
+
+void tele_tr_pulse_clear(uint8_t i) {
+    printf("TR PULSE CLEAR i:%" PRIu8, i);
+    printf("\n");
+}
+
+void tele_tr_pulse_time(uint8_t i, int16_t time) {
+    printf("TR PULSE TIME i:%" PRIu8 " time:%" PRId16, i, time);
+    printf("\n");
+}
+
 void tele_cv(uint8_t i, int16_t v, uint8_t s) {
     printf("CV  i:%" PRIu8 " v:%" PRId16 " s:%" PRIu8, i, v, s);
     printf("\n");
diff --git a/src/ops/hardware.c b/src/ops/hardware.c
index 5607d167..38af4dc2 100644
--- a/src/ops/hardware.c
+++ b/src/ops/hardware.c
@@ -409,6 +409,7 @@ static void op_TR_TIME_set(const void *NOTUSED(data), scene_state_t *ss,
         return;
     else if (a < 4) {
         ss->variables.tr_time[a] = b;
+        tele_tr_pulse_time(a, b);
     }
     else if (a < 20) {
         uint8_t d[] = { II_ANSIBLE_TR_TIME, a & 0x3, b >> 8, b & 0xff };
@@ -447,8 +448,8 @@ static void op_TR_PULSE_get(const void *NOTUSED(data), scene_state_t *ss,
         int16_t time = ss->variables.tr_time[a];  // pulse time
         if (time <= 0) return;  // if time <= 0 don't do anything
         ss->variables.tr[a] = ss->variables.tr_pol[a];
-        ss->tr_pulse_timer[a] = time;  // set time
         tele_tr(a, ss->variables.tr[a]);
+        tele_tr_pulse(a, time);
     }
     else if (a < 20) {
         uint8_t d[] = { II_ANSIBLE_TR_PULSE, a & 0x3 };
diff --git a/src/ops/init.c b/src/ops/init.c
index 574bf659..8dbb1219 100644
--- a/src/ops/init.c
+++ b/src/ops/init.c
@@ -144,7 +144,7 @@ static void op_INIT_TR_get(const void *NOTUSED(data), scene_state_t *ss,
         ss->variables.tr[v] = 0;
         ss->variables.tr_pol[v] = 1;
         ss->variables.tr_time[v] = 100;
-        ss->tr_pulse_timer[v] = 0;
+        tele_tr_pulse_clear(v);
         tele_tr(v, 0);
     }
 }
@@ -156,7 +156,7 @@ static void op_INIT_TR_ALL_get(const void *NOTUSED(data), scene_state_t *ss,
         ss->variables.tr[i] = 0;
         ss->variables.tr_pol[i] = 1;
         ss->variables.tr_time[i] = 100;
-        ss->tr_pulse_timer[i] = 0;
+        tele_tr_pulse_clear(i);
         tele_tr(i, 0);
     }
 }
diff --git a/src/state.c b/src/state.c
index 0f8931a6..751c3068 100644
--- a/src/state.c
+++ b/src/state.c
@@ -17,7 +17,6 @@ void ss_init(scene_state_t *ss) {
     ss_rand_init(ss);
     ss_midi_init(ss);
     ss->delay.count = 0;
-    for (size_t i = 0; i < TR_COUNT; i++) { ss->tr_pulse_timer[i] = 0; }
     for (size_t i = 0; i < NB_NBX_SCALES; i++) {
         ss->variables.n_scale_bits[i] = bit_reverse(0b101011010101, 12);
         ss->variables.n_scale_root[i] = 0;
diff --git a/src/state.h b/src/state.h
index 3ae57521..e2435cc7 100644
--- a/src/state.h
+++ b/src/state.h
@@ -261,7 +261,6 @@ typedef struct {
     scene_pattern_t patterns[PATTERN_COUNT];
     scene_delay_t delay;
     scene_stack_op_t stack_op;
-    int16_t tr_pulse_timer[TR_COUNT];
     scene_script_t scripts[TOTAL_SCRIPT_COUNT];
     scene_turtle_t turtle;
     bool every_last;
diff --git a/src/teletype.c b/src/teletype.c
index 6a9d4a63..07b79547 100644
--- a/src/teletype.c
+++ b/src/teletype.c
@@ -18,7 +18,10 @@ bool processing_delays = false;
 // DELAY ////////////////////////////////////////////////////////
 
 void clear_delays(scene_state_t *ss) {
-    for (int16_t i = 0; i < TR_COUNT; i++) { ss->tr_pulse_timer[i] = 0; }
+    for (int16_t i = 0; i < TR_COUNT; i++) {
+        tele_tr_pulse_clear(i);
+        tele_tr_pulse_end(ss, i);
+    }
 
     for (int16_t i = 0; i < DELAY_SIZE; i++) { ss->delay.time[i] = 0; }
 
@@ -344,25 +347,11 @@ void tele_tick(scene_state_t *ss, uint8_t time) {
             }
         }
     }
+}
 
-    // process tr pulses
-    for (int16_t i = 0; i < TR_COUNT; i++) {
-        if (ss->tr_pulse_timer[i]) {
-            // prevent tr_pulse_timer from being greater than tr_time
-            int16_t tr_time = ss->variables.tr_time[i];
-            if (tr_time < 0) tr_time = 0;
-            if (ss->tr_pulse_timer[i] > tr_time)
-                ss->tr_pulse_timer[i] = tr_time;
-
-            ss->tr_pulse_timer[i] -= time;
-
-            if (ss->tr_pulse_timer[i] <= 0) {
-                ss->tr_pulse_timer[i] = 0;
-                ss->variables.tr[i] = ss->variables.tr_pol[i] == 0;
-                tele_tr(i, ss->variables.tr[i]);
-            }
-        }
-    }
+void tele_tr_pulse_end(scene_state_t *ss, uint8_t i) {
+    ss->variables.tr[i] = ss->variables.tr_pol[i] == 0;
+    tele_tr(i, ss->variables.tr[i]);
 }
 
 /////////////////////////////////////////////////////////////////
diff --git a/src/teletype.h b/src/teletype.h
index 3e0c6970..97ecf8e1 100644
--- a/src/teletype.h
+++ b/src/teletype.h
@@ -47,6 +47,8 @@ void tele_tick(scene_state_t *ss, uint8_t);
 
 void clear_delays(scene_state_t *ss);
 
+void tele_tr_pulse_end(scene_state_t *ss, uint8_t i);
+
 const char *tele_error(error_t);
 
 #endif
diff --git a/src/teletype_io.h b/src/teletype_io.h
index b1dffe0d..006eaf93 100644
--- a/src/teletype_io.h
+++ b/src/teletype_io.h
@@ -23,6 +23,9 @@ extern void tele_metro_updated(void);
 extern void tele_metro_reset(void);
 
 extern void tele_tr(uint8_t i, int16_t v);
+extern void tele_tr_pulse(uint8_t i, int16_t time);
+extern void tele_tr_pulse_clear(uint8_t i);
+extern void tele_tr_pulse_time(uint8_t i, int16_t time);
 extern void tele_cv(uint8_t i, int16_t v, uint8_t s);
 extern void tele_cv_slew(uint8_t i, int16_t v);
 
diff --git a/tests/main.c b/tests/main.c
index d83d3661..b2970667 100644
--- a/tests/main.c
+++ b/tests/main.c
@@ -17,6 +17,9 @@ uint32_t tele_get_ticks() {
 void tele_metro_updated() {}
 void tele_metro_reset() {}
 void tele_tr(uint8_t i, int16_t v) {}
+void tele_tr_pulse(uint8_t i, int16_t time) {}
+void tele_tr_pulse_clear(uint8_t i) {}
+void tele_tr_pulse_time(uint8_t i, int16_t time) {}
 void tele_cv(uint8_t i, int16_t v, uint8_t s) {}
 void tele_cv_slew(uint8_t i, int16_t v) {}
 void tele_update_adc(uint8_t force) {}