"If you have an issue with screws that comes loose,
fill the thread of the screw with string wax!
Works better than LocTite.(bolt adhesive)"
I use a small amount of choke tube lube on all my bolts, and even rub a little on the head of the bolt. This keeps them from rusting.
If your limb driver string stretches, you can shorten it in small increments by burning the end that fits in the limb deelio thingy.