Somewhere, years ago, I got a set of sockets with soft plastic inserts in them, just for this purpose. You still have to do some touch up, but not nearly as much. Let the parts sit for 30 days or so after paint before you bolt it all together to let the paint cure well. (be sure to do that before you install your butt stripes too - I didn't once and the paint off gassed under the stripes and it took months to all come out.)