Not sure this is the appropriate place to put this but I'm hopeful that it will fit in. I've stripped my car to bare metal with plastic media, cleaned it with SPI cleaner, and DA'd it with 80 grit. It's ready to prime with epoxy. My concern is an area on the roof that I guess is residual rust. I've sanded the roof with 80 grit and this is what I get.....see photos. Not sure I want to sand on it much more. Would I be okay to go ahead and shoot epoxy over this or should it be treated with something prior to the epoxy? Thanks!
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