A buddy of mine works at a body shop. He told me that (in this situation) you don't want your primer to dry before you spray it with color. Wait for the primer to get "tacky" and then spray your color. That way, the paint and the primer "bond" together to make a much more durable surface.
Good luck!
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'71 fj40 w/ 23k miles, carb rebuilt and ported by 65swb45, SOR 2 piece header, vacuum advance w/ pertronix, Hell Creek 4" lift w/ homemade shackles sitting on 33s, front disk conversion.
ROTW
"Yeah, we're runnin' a little bit hot tonight. I can barely see the road from the heat comin' off. I reach down between my legs n' ease the seat back. She's runnin', I'm flyin'!"