Montgomery Ward boat motor throttle gear

This is a replacement gear for a Montgomery Ward boat motor throttle. The original gear was a type of plastic, possibly Bakelite? I wish I'd taken a picture of the original, but I did not.
I have also included the Sketchup file which is scaled up X10 to make it easier to work on. And to think It only took me 19 iterations to get it right. I hope it helps someone else out there.