Ultegra 9 spd Cassette compatible with tiagra?
I've just installed a 9 speed ultegra cassette on my bike, everything else on it is Tiagra (shiters, front/rear mech) just expeiriencing some chattering on the gears that are in the middle of the casstte. I've adjusted cable tension, to no avail. Just thought I'd ask if there are compatability issues before I give the cables an overhaul, check if the chain is worn. Thanks.