Bronze sail track on an aluminum mast

[Brion Toss]

Hi again,
Glad to help. I'll add that, while LocTite has some metal-isolating effect, it isn't ideal to begin with, and diminishes over time. A very thin layer of Tef-Gel is effective, and durable. Also, I've found that spar sections are typically much too thin for effective use of Helicoils; try Riv-Nuts.
Fair leads,
Brion Toss