I seem to be seeing alot of cases where people using acid etch primer over bare metal get bubbles in their paint after a while. I plan on trying the SPI epoxy primer everyone is so hot on for the remainder of my project, But on some areas of the car i've used acid etch primer. I'm new to these things so I'm not real keen on the Do's and Do not's. Basically all i'm looking for is a good paint job that lasts, just like all of you are i'm sure. Is acid etch a no no?