Ok, sand and repeat. I sanded the filler primer and exposed too much bare metal. Worse than that I missed a huge crease where the door was opened too far at one time. Very typical on old cars, my 51 Willys had the same damage and has it again.
At bit more filler takes care of that. A bit more touch up here and there and more epoxy primer followed by filler primer. Sprayed the fender too because I knew I would have extra mixed. It is not really ready but enough along to spray it anyway. Better than wasting expensive product.