I removed rust from underneath the trunk weatherstrip, and painter primer over the area. I have red paint to put on top, and then I'll install a new weatherstrip.
I saw wet sanding the primer with 600 grit done in guides online, but I don't know if it's to help the pain stick, or if it's just for a perfectly-smooth end result. The area that I've painted is going to be covered with the weather strip.
What should I do?
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