Feigao 9L dismantling

[pullinteef]

Hey everyone, I've been reading these forums for a while but finally decided to post. I've had my 540C-9L shaft come loose from the rotor, and was trying to figure out if it could be repaired. It fits back nice and snug, but eventually the whole pinion/shaft assembly works its way forward during use and the gears end up misaligned. Also, does anyone have a diagram of the internal layout of these motors. I can't remember the placement of the brass spacers (short vs. long) with regard to the front and rear of the motor. Thanks, I'll be posting more about my setup soon, I've mostly been on other forums but this seems to be the most active and informative.