Over the course of a year, I have had a second screw fall out of a tuner knob on my Breedlove FF. I was fortunate to find both of them. Aside from trying to remember to give the screws a good tightening each time I replace strings, is there something I could use to ensure that the screws don't work themselves loose? I wondered about a product like 'Locktite'. Or would that just create a bigger problem down the road?