I have used this stuff with a good deal sf success. I get this stuff from work but it is called something else. I have used it to repair condensers on the new carrier roof top units.
The only thing that you can use to heat is a small propane torch. The oxy/ ace torch will not work or will a turbo torch setup. It is not as easy as it looks but it dose work.
Like it was said above clean. Degreaser. Carb cleaner, acetone then alcohol. You can't do it twice if you mess up the prep.
Trikes:
1985 ATC 70 mod to 184cc
1984 ATC70 mod to 124cc
1983 ATC 70 Xmas restoration
Quads:
1986 TRX 250R
2002 TRX 400EX
2- LT80 for the kids
1986 LT 50