I just installed an aftermarket rear quarter panel. The new panel went on decent, but the panel itself is pretty wavy (not due to welding, but the way they were stamped.) I just epoxied the panel & was thinking of spraying 3 coats of U-Pol Reface polyester primer with a 3.0 tip & blocking with 80 grit to see what filler work has to be done. Would this procedure be OK? Thank Again

Your best bet would be to run a block over it now and to the best of your ability bump them low areas up and high areas down, then reapply the epoxy and allow that to cure overnight then shoot your polyester primer. You don't want to do any hammerwork after that surfacer has been applied. Any remaing low areas found after blocking the polyester primer can be filled with body filler, or polyester glaze, or more polyester primer-they are all compatible.

Bad Bob:Thanks for your reply. I sprayed U-Pol like I posted & it worked better than I ever could of hoped for.(Yes I did all the metal work to the best of my ability before primering) My question to you & others is. Is there a drawback to using this procedure? I would like to do this with the other quarter panel & to the rest of my panels. I read that by using to much polyester primer it could cause chipping problems in the future. Should I reapply SPI epoxy primer before applying regular SPI high build primer to help alleviate this. Also, do I have to sand down with 180 grit before reapplying. I left a little primer in a cup & I noticed no shrinkage what so ever. Thanks again to all.

I think SPI has a flow chart on their site
http://www.southernpolyurethanes.com/homepage.htm