After the fire I've sanded, filled, primed and painted the dash. After two days in the warm shop I see now that I hit it with a little too much paint and the metal flake sagged a bit.

Sooo ...

I roughed up the paint job with 200 grit and hit it with more primer ... Now that I've sanded out the primer with 200 grit and then finished sanding with 400 grit and then 600 grit. My question is did I have to reprime the job or could I have lightly sanded the dash with 400 grit and then shot more paint on it?