Fix kps3

[ufechner7]

• fix the one point model
• fix some of the examples

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.81%. Comparing base (282438e) to head (24bf1a5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #85   +/-   ##
=======================================
  Coverage   87.81%   87.81%           
=======================================
  Files           5        5           
  Lines        1354     1354           
=======================================
  Hits         1189     1189           
  Misses        165      165           

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