Ok so it's been a while since I blocked something so just need some quick steps on how to proceed. Just got done blocking my truck bed which is SMC material.. First was 3 coats of SPI epoxy then I did the little bit of body l work it needed and blocked it out with 180. Shot two more coats of epoxy, then two coats SPI 2K. Just got done blocking with 180 and it looks pretty good. Have some burn throughs to the epoxy so..... do I keep going and sand this coat with 220 and then more progressive grits and then reshoot with the 2K ? or should I shoot another coat of 2K now and block it, but do I start that coat with 180 or should I start with 220 and work up? I always get confused with that part. I guess what I'm asking is am I done with the 180 for the most part?