I applied 2K primer to bare clean metal about 2 days before spraying the color. I sanded the primer with 600 grit, then cleaned, then sprayed the color coats. The 2K and color coats were not from the same manufacturer.

I was NOT using an HVLP gun.

I probably did not wait long enough to apply the second coat--I didn't time it but it was probably within 5-10 minutes. I suppose I should have let it set more like 15-20 minutes? Was that the problem?

Thanks again for your help.

Jim