Just tested again with smaller cassette. It definitely shifted better when I tuned it with the original Shimano cable in place. I reckon either the newer cable is worse (it's full length outer so ALL THE DRAG), the RD is a bit bent or the 105 mechanical shifter is worn.
Just tested again with smaller cassette. It definitely shifted better when I tuned it with the original Shimano cable in place. I reckon either the newer cable is worse (it's full length outer so ALL THE DRAG), the RD is a bit bent or the 105 mechanical shifter is worn.