Two of my Telecasters have developed the same issue: The pickup selector switch tips fall off. Just drop right off the switch while I'm playing. I don't even have to touch the selector switch.
I had thought of putting a small gob of Sugru on the switch and re-attaching the tip. I'm hesitant to do that, as once the Sugru dries, it's pretty well permanent. Same thing goes with Loc-Tite. It's my luck that something will come up requiring the removal of the switch and the glue will make doing so inordinately difficult.
Has anyone had this same issue, and how did you deal with it? I'm even considering chewing gum, but I think once it's dried the problem will resurface, and I'll have an even bigger mess on my hands.