Originally Posted by
Wilfred Laurier
not added friction
but extra cable pulled out
holding mech in third
I agree with that, however, the OP said he could shift two or more gears and the rear would skip allowing him to shift back up to where he wanted to be, hence my suggestion that it could be catching the cable. I'm with you that there's probably 1/4" or so of extra cable used up to make that bend as well.