Set screws not functioning
I tried a search of the forum, but anything with deraileur or set in it gave a lot of responses.
Anyway, the problem is that on my friends specialized dolce, with a tiagra FD it is unable to shift down to the smallest chainring. We released the derailleur cable so it would spring back and it is now possible to manually set the chain on the chainring, but it rubs the whole length of the FD cage.
The real problem is in atempting to adjust the set screws, they dont seem to do anything at all. We have tried tightening and losening the screws, but it wont move either direction. On my bike the slightest turn gives some movement so I am unsure what to do now.
Thanks for your help