Replace the whole of my 6700 drivetrain with full genuine parts:
- compact chainrings (50/34), chain and cassette.
What expecting to be 'as new' and smooth, instead struggling for indexing (get i perfect going up, then just not quite right going down or vice vera).
Plus its not super quiet when turning the pedals either like it should be!!
Tried everything, the chain is the correct way round (shimano text outwards), but tried it in all 4 directions/ways with no joy, tried the b tension screw. Even bought and fitted a new mech mech hanger with no joy. Rear mech jockey wheels are fine too.
Only thing i think of doing is sacking off the shimano chain and getting a aftermarket chain???