Loctite RC-680, anyone have experience?
Has anyone used Loctite RC-680 to gap fill a loose headset cup/head tube seat? If so, is it possible to later remove the cup without applying paint-damaging heat once it's cured?
The backstory:
I have an '89 Bridgestone MB-2 that, being a full rigid MTB, has a very slightly out of round head tube due to pounding. In the past, I've used Loctite 242 to gap fill, but 242 is a weak gap filler. I'm looking for a stronger compound, but I don't want to use anything that will create such a strong bond that the cups can't be removed mechanically. The bike is something of a classic, and I want to preserve it's original finish.
Barnett's mentions RC-680 as a solution, but Loctite's 680 data sheet indicates heat should be used to break the bond.
Thanks!