Thanks very much for the info cn63bug. I should know by now after so many rebuilds. It is just that I have installed slanted main drive and new motor pinion and it sounds awful. Cheers
Is it at all possible to fit slanted pinion up side down on the motor>
As for rotation its anti clockwise on a gear to gear drive system and clock wise on a belt driven system (I.e. goblin, warp and ms heli).