My bike has been shifting funny, and recently has started making grumbling noises when pedaling. I took it to the shop and they said the hanger was bent and straightened it. In doing so he said not to have it straightened again, and if I do have it replaced, to only do it once.
Is he trying to get me to buy another bike, or just giving me advice on the cautious end. I understand not bending it straight again...as it could weaken. I don't understand the only replace it once. Is this because it can strip the threads on the frame or what's the deal with that?
I don't think it will be a problem, I'm just curious if he was shooting straight with me. In the past his advice has been spot on, but the shop was too busy for me to inquire as to why.