I'm changing my 850's tail light over to the older style & want to paint my rear fender. I can bead blast, prime & paint it myself or have it powder coated, Is powdercoating a bad idea for a rear fender? Seems like it may not hold up if I flex it a little on assembly or to road use. Also i seem to remember a few people (swoosh) talking about undercoating the inside. Has anyone had good or bad experiance doing that? Thanks, Glenn.