OK, all brand new drivetrain.
Mechs/Chainset/Chain/Cassette is all M786 2013 XT, with double chainset and double specific front mech.
The only thing out of place are the shifters which are the 3×10 SLX ones that were on CRC before Christmas. Still brand new though
EVERYTHING is labelled ‘Dynasys’
Rear is working perfectly.
Front mech is set up, limit screws correct, no chain rub, parallel to chainrings and the correct distance form them according to that sticker you get on a new mech
Problem is that the front shifter appears to be pulling too much cable. This manifests itself in a very baggy inner cable when in the inner ring, or if I tighten that up, it won’t shift into the big ring as the mech hits the limit screw before the shifter clicks into place. If I alter the high limit screw, the cage moves too far and the chain rubs.
I’ve checked the cable routing into the mech on the Shimano tech docs, and I’m right, it’s sitting nicely in the groove under the screw.
I’ve done exactly what I’m doing now with 9sp double (i.e. used positions 1 & 2 on the shifter and locked 3 out with the limit screws on the mech no problem at all)
Ideas please? What’s going off?