I just upgraded my girlfriends bike w/ an XTR rear derailleur off of one of my bikes and a new XT front derailleur. I'm using new XTR cables and LX Deore shifters.
I have both derailleurs dialed in and working flawlessly except for one problem. The front derailleur doesn't want to shift the chain off the big ring onto the middle ring. All of the other shifts are perfect: small to middle, middle to big, middle to small.
Any ideas as to what would be causing a problem with that? The limit screws are set where they need to be and the height is correct as far as I can tell.
Thanks a lot.
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