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Discussion Starter · #1 ·
i replaced my front crank and bb with xt m752 cranks and an es71 bb. the old bb was a square 73 X113 and crank was a cheapo off a specialized. the new bb is an octalink 73 x 118. the chain rubbs on the top ring and on the bottom ring up front. i have adjusted the derailer to the max and it still rubs! another problem is that if my front is in 2 and the rear is in 4 it wont shift into the granny, but if i am in three in the back and two in the front and drop it into the granny it will go fine but it will still rub..............
 
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