Hello, I am currently painting a hood for a Jeep I am fixing up. It's not a show car, but I want to do a good job and use it as a learning opportunity. The hood is stripped to bare metal with a few areas repaired with filler. I am using Omni AU MTK Urethane Paint. I have also purchased the MP-176 etching primer. Does the etching primer have to be top-coated with another primer before the finish coat? Do I have to use Sealer? What would the steps be required after the applocation of the etching primer? Thanks