Just want to get everyone's opinion on something. I've talked to those who primer bare metal with epoxy, then apply filler so entire metal surface has good protection. Then I've also talked to those who apply the filler first to areas that need repair before the epoxy primer because they say the filler is made to chemically bond to the bare metal. I've always applied filler first and haven't had any problems, but looking to get advice from those who have more years than me in body work. Thanks,