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					Originally Posted by  egronvold
					 
				 
				If Joe has not broken one, don't bother buying one    
			
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 HAH! that's funny Emil 

 ...and true! The only failed part I have ever had in a stock tranny is the top middle aluminum gear for 2nd in the white GL that has a million scale miles in over a decade of run time. 
That "HD output shaft" is about as necessary & useful as the brass helical gears... sucker's play. 
The radical amount of wear on that above trans is probably less about lube & more about what that in runner brushless motor's top speed is set to?