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Recoat epoxy

Hey guys,

I sprayed spi epoxy primer a few months ago and applied body filler. Other things in life got busy so I just finished sanding the epoxy & body filler. I want to recoat the entire body with epoxy before applying 2k primer(sanded through some areas). There were some areas where I didn't block(around firewall/cowl) so my question is:
Can I get away with using red scotch brite on areas I want to recoat even though its been a few months since I sprayed the first coats of epoxy? Or do I have to use 180 grit sandpaper?

Thanks guys, this forum is great!