Thanks to everyone for your suggestions.
Not sure why I overlooked the McMaster STEP file option given I routinely download their STEP files. I should be able to use their pulley tooth profile(s) to meet my needs and if not I can try to export the DXF and/or PDF's from OpenSCAD and then use MOI3d to capture the tooth profile. I did re-discover today that the Thingiverse OpenSCAD pulley generator script includes a 'tolerance' variable for fine tuning the actual 3D prints. My 3D prints to date are useable but not an optimum fit due to the typical 3D print tolerances for small dimensional shapes. So this 'tweaking' variable should really help dial in the best dimensions without a lot of tedious drawing iterations.
Thanks again. This forum definitely adds value to the wonderful MOI3d program!
Cheers
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