In the meantime the epoxy primer was good for sanding with grit 500 paper. This is the moment when the last preparations to the surface can be made, sanding, filling up gaps and scratches with filler, sand again and finish with primer, than sand again.. this eats time! but after a hard day work, all the parts were ready for their final layer of single stage beige 464.
Not much to tell, let the pictures speak for themselves. I was happy with the outcome.