Originally Posted by
wipekitty
I had the same issue earlier this summer (also on 5700). A new cable cleared it right up

It was a much easier repair than I expected.
Thanks Wipekitty, I'll give it a shot.
It's a CAAD10 and this version has the shifter cables external to the frame (brakes are internal though). Trying to avoid the walk of shame to the bike shop with undone cables-been there once!