Hello,
Just thought I would share a couple of mockup CAD files I made for Pololu offset mini plastic gear motors. Maybe others will find them useful. I used them in a small robot I am working on while waiting for my oder to arrive. Included are both STEP and STL versions.
Pololu1512-Mockup v1.stl (18.5 KB)
Pololu1512-Mockup v1.stp (39.9 KB)