if less t difference and it wont clear the middle chainring. 10 should still be OK*
raise the FD on the seat post a bit. so it clears the middle chainring.

the chain line on the front should line up with # 5 of 9 in the cassette, the Middle.


*I'm running a 50-40-24t triple , friction bar ends and old way Pre STI FD's .. it works fine

a 40-46 difference is another story , there you have to stray from the owner's manual suggestion ..






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