Originally Posted by
shelbyfv
Wasn't really thinking "professional" bike mechanics, that's a pretty low bar. For example, this pins/rollers/chain wear discussion would benefit from input by an actual engineer of the relevant type. The rest of us just have opinions and don't know what we don't know.
If having decades of experience being a bike mechanic is not considered expertise on a bike mechanics forum, then nothing is.
No wonder Qanon got so big. Too bad he can't help you fix your $300 shifter.