I have a couple of guitars--including my 1965 Gibso LG 50--that have one or more pegs that just won't stay tuned for more than about one song--especially if I capo up for a song. Some of the pegs just won't stay put--they seem to have excess slack in the worm drives. If I tighten the screws, it lasts a few hours or a few days.

Is there anything you can put on the worm drive or the screws that will stop or slow down the slipping. I could buy new pegs, but that's kind of expensive and a couple of my "everyday" guitars aren't really worth spending a lot on. (I have a beautiful old Martin that I play at home and use for special gigs, but I don't like to travel with it a lot or take it to my daily gigs at retirement centers and nursing homes for fear of it being damaged or stolen while in my car or elsewhere.

If anyone has any suggestions about improving peg stability, I'd appreciate them

Genie