I have a diamond back road bike and the rear derailer hanger stripped. I think it was due to a rather violent crash. At any rate the LBS wants to cut the rear derailer hanger off and put a new hanger on and charge me 100$. Is this my only option? I just bought a new rear derailer thinking that was the problem..then I found it was stripped. My bike is kind of beat and I'm wondering if I should replace it. I would appreciate any ideas or advice. I don't have a ton of money to throw around.