I managed (through my own stupidity) to strip the thread on the cable anchor bolt hole on my front derailleur (Suntour Cyclone M-II circa 1983). So now, I can't fasten down the bolt tight enough so that I can apply pressure to the cable...it just slips out when I move the lever.
My question - is there any way to fix a stripped thread like this? I have read about using Teflon plumbers tape to stop things from squeaking. Would a few extra layers of this help with my problem by "filling in" the threads? I'm doubtful, but it's the only option I can think of, short of re-drilling a larger hole and re-threading it, which I would like to avoid if possible (how easy is this to do on this type of aluminum?) Any other options, or should I just start looking to buy a replacement derailleur? If so, how do I tell what types will be compatible with what I have?
Thanks for any and all replies!