71c20rock,
Just for your info, one of the men at my plant has a '72 p/u. He had it painted several years ago and this same area sealed. It is now rusted almost beyond repair. I mentioned your post to him and he said when he had his painted, the shop told his SOP on these gutters was removal. They told him they were always a problem area and eventually would be the source of cancer.
Stuart.
