Well I finally might paint some plugs in the near future

and was wondering if you wire your plugs, grommet, weights, etc, before you paint or do you wire them after paint. If you do wait till after paint to do all the hardware how do you keep from putting your fingerprints all over them and thus run into the problem of having dirty plugs before the epoxy. I know some do hardware after epoxy but I want to do hardware before and then epoxy. I have read about problems with fingerprints and adhesion of the epoxy. Is there something you use to wipe the plugs down with before you put the epoxy on? I am a fish out of water on this subject. Thanks Paul