4 of the tuner holes on my U1 were bored out when it was made into a bass. You can sort of see it on the 2 E strings (also the D & G):
What's the best way to fill? The proper way would be dowels and redrilling, but I don't have a flush-cut saw or drill press. I'm wondering if I could just use QuikWood or something to fill in the excess and sort of mold a new hole for the bushing. Would it work or would I just be making a mess?
that is a tough one.
i would say that since you are doing this yourself then perhaps wood filler with a bit of paint would be the best option.
otherwise, dowell rods.
Do not use Kiwk wood or any of that filler putty, it's total shit, and will shrink.
I think there are conversion bushings in there now. It was drilled for bass pegs, so the holes are pretty big. Hmmmm... My grandpappy has a drill press and skills. Maybe I should wait until I'm home for Christmas and do it the right way.