I noticed someone was wondering how to keep their chairing bolts from loosening up. I know various locktites work but here's a few other options.... I've been racing motorcycles for years and in that sport if there's something that can loosen it needs to be drilled and safety wired. Or if there's a hole in it already, like a chairing bolt, run the wire thru it and give it a few twists. It won't be coming off until you clip it with a side cutters or pry the wire off. As an alternitive you could loop a zip tie through it and the effect is the same. This practice is useful if you have an assembly that can't be overtorqued but you still want it secured.

Images to follow.