I am new to this and finally had some time to do some parts for a buddy. I coated them once and there were a few spots that didn’t turn out so great so I wet sanded everything down and re-coated. Once I brought them out of the oven there was a little orange peel and the powder didn’t want to stick to the upper one third of the rim. Do I have to sand it down to re-coat it and I should probably grind down a spot to ground it better right? Any advice would be greatly appreciated.