Well, even my Essi didn’t just spare the rust. Rost at the top of the rear wheel and the threshold edges, so where you put the jack on, they bloom in full length. Looks like a cut-up croissant. Here I ask myself 2 gnerelle main questions:Which rust brake use? I read very often, even with oldtimer restorers, that they use “Fertan”. Can one put this from the inside on the fender on the wheel run, because to my knowledge from there the rust What do you advise me to do with the sills? Change completely on both sides? Or can you do something permanently for a long time? (Do they actually bloom up because water has penetrated from below or from above? What is the typical cause of the sills?)