MLCad 3.51 is available (probably since long ago):
https://www.lm-software.com/mlcad/MLCad_V3.51.zip
Sadly the accompanying ReleaseNotes.txt file
does not mention this version and its differences over 3.50
https://www.lm-software.com/mlcad/MLCad_V3.51.zip
Sadly the accompanying ReleaseNotes.txt file
does not mention this version and its differences over 3.50