I recently upgraded my mountain bike ( 2004 Enduro Expert ) to new XTR and XT components. I'm using,
All 10 speed dyna-sys
XTR SL-M980-A shifters
XTR FD-M980 front derailleur
XTR RD-M985-SGS rear derailleur
XT 11-36 10 speed rear cassette
XT FC-M780 triple crank 42-32-24
The rear works perfect. When it comes to the front derailleur, I can't find a spot where it works for all shifts. If I'm on the smallest cog, I can't shift from the middle ring to the smallest chain ring. If I adjust so that works, then, if I'm on the biggest cog, I can't shift from the middle ring to the largest chain ring. When I set it up so that while on the biggest cog, I can shift from the middle to biggest chain ring as a starting point, then go back to the smallest cog and try to shift to the smallest chain ring, it fails again. If I adjust the front so that it will finally shift to the smallest chain ring ( low side adjustment ), then when I'm on the biggest cog and shift from the middle chain ring to the smallest chain ring, the chain will fall off to the inside half the time. I have things working better by rotating the front derailleur so that the back end of it is slightly more towards the frame than the front. Seems happy here, but not close to following the spec'd setup. I know these are the extremes and I would not be typically riding here. I do how ever expect it should shift properly, and accept that there will be noise while in certain gears. Any thoughts?