Originally Posted by
MrRider
I don't mean break it for straight on pulling force, but the sideways action. When I'm pulling with the string, due to the fact I have to pull so violently and repeatedly, I'm thinking if some tugs produce a bit of sideways force, could the plates of the link or chain bend out of shape sideways, if you know what I mean?
I don't know what you're doing with the string, but it is not a side load more than downshifting on a hill.
Use pliers on the outside of the opposite link plates.