Help me out here. You said epoxy primer over Bondo before Monstaliner. Is there any wiggle room on this? I just discovered that epoxy primer has to be applied with a paint gun, which I don't have, but could probably borrow, but never used one before. I only have 2 small areas that are body filled. I will do this properly, but any chance I can just use a self-etcher in the spray can or something similar?