Many shops commonly apply self-etching primer to bare metal surfaces. But most polyester fillers and epoxy primers should not be applied directly over self-etching primers. So what do you apply when you need additional filling? Feather Fill G2 is the answer. This is from the Eastwood website.
You can keep arguing with me, but, I can read, and I know what happened to me. You weren't there, You have your opinion, I have mine. Let it go.