XtremeMDX....I disssembled the engine, did not see anything broke or exessively worn, just noticed a large amount of free play between crankshaft and one way bearing shaft.
I also run a modified TRX .15 on my NTC3 but on this engine i have a blank backing plate that has elliminated the one way bearing shaft, i dont get any clicking from this engine....it has been run once in the T-Maxx....no clicking there either