1982 Trek 613 Repair
Hey folks:
I'm in the process of fixing a 1982 Trek 613. As I try to de-seize the seatpost and stem (currently ammonia soaked), I noticed that the drive-side chainstay has some corrosion and is slightly indented at the location of the corrosion. So I have two questions:
1) Is that indentation completely due to corrosion, or did the 1982 613 have a mildly indented drive-side chain stay (the indentation is located where one would expect to see this, but it is very subtle, not like the very obvious pinched versions I am used to seeing)?
2) If this indentation is due only to corrosion, is the recommended repair to sand and clean to the bare metal, MAPP gas in some filler metal, and then sand it uniform?
Let me know your thoughts on this folks. Thanks!