Ok, sorry, after a little more searching, I found a photo that shows the motor mounted on the stick, and I didn't realize it goes ABOVE where you would normally put in an inrunner. So when I play around with it, it looks like a screw goes through the hole at the end of the square receiver for the stick, and the two others line up on the circumferance of the ring housing. So I guess you just drill two holes in the plastic for them, yes?

thks again, scott