hi all...yer i see what your saying the larger gear is moving away from the pinion due to too much power haha. but i shimmed the pinion and its still quite well adjusted. must have movement else where. yes i am still running plastic cases and yes i know about flex on those (had a xtm mammoth st) . i have got ally fastlane bulks tho so it should be fine but i will re-assemble and check.
thanks all...