Problems with chain skipping
Having trouble with what seems to be a skipping chain when in the 34 front and both the 12 and 13 in the back. This is my first non-campy build and it only happens in the 34 and not the 50. The skipping seems to stem mostly from the 34 ring like it may be worn.
Components:
Ridley Excalibur frame
105 shifters
dura ace fd
force compact crank
105 rd
12-25 dura ace cassette (i think)