Nice looking frame!!

I don't think that you should refinish it, especially with powder coat and I personally wouldn't even bother with the touch-ups. Clean it, wax/polish and ride it.

If you are careful, you can file off the broken guide (mask around it with tape and use a fine file when you get near the tube) and use one clamp on guide, or you could use one of the replacement guides from NOVA (they have a minimum $ order) and jb weld it as suggested and then spot paint it with a brush, either way you don't destroy the paint on the TT.

thirst