dave,

a picture is worth a thousand words....

see below.


In the first pic you will see there's an extra plastic lip on where the shaft connects to the plastic gear. this is the difference between the pinion and the gear lining up once installed... see second pic.

I thought about using the dremel to shave the extra plastic off... but as you said this will be impossible to get perfect and can introduce some slop...

is there enough contact? see second pic...

am I just trying to get this too perfect?

also I just realized the motor with the best fit (longest shaft) is a 10 tooth pinion.... hmmmm, I wanted to go with the bell-hiller mxing, and LiPo's on this heli....

anyone use bell hiller with 10 tooth and NiMh packs? I guess this would be the downsized CP Pro... seeings how I'm using the 3in1 from the CP Pro.

going to check if any of my 9 tooths match up with the gear.....