Have you tried flooding the shifter with WD40 and clicking it up and down for a couple hours or so, constantly re flooding it? Solved a pair I got awhile ago. Then just re-lube once it starts clicking properly after the WD40 has completely drained and dried out of it.
Have you tried flooding the shifter with WD40 and clicking it up and down for a couple hours or so, constantly re flooding it? Solved a pair I got awhile ago. Then just re-lube once it starts clicking properly after the WD40 has completely drained and dried out of it.