tow'd, Totally confused now? The only thing I will add is to use a catalyzed urethane primer. This is a great barrier coat, preventing interaction between the paint, and what is under the primer.

Also, it is very stable. If you have buried heavy scratches, and rough edges on bodywork, it should not come back later. I have zero problems using this. Use at least two coats, and up to 5 or 6 if it's really wavy.

You won't even need a sealer, unless you sand through, or glaze low spots, during the blocking process, or if you want to start with a color closer to your paint color.

Wear a mask meant for catalyzed paints!