I have read many threads, as well as visited the SPI website and forum, and I am getting somewhat conflicting messages. I have the car in SPI epoxy (black) and plan on shooting slick sand, and 2K this week. Sometime before assembly, I want to shoot BC/CC over the "hidden" areas (cowl, tail light panel, etc). The epoxy will be WELL past the 7 day re-coat window. I have read of two methods: 1. scuff cured epoxy with a red scuff pad, shoot thinned down epoxy (sealer) and then the BC/CC 2. scuff cured epoxy as above, and shoot non-thinned coat of epoxy, BC/CC Which way is better? Is it just a matter of personal preference?