2009er V50: rust on the fender

Hello, today both in the back and in the front have dismantled the wheelhouse cladding, as I would like to use Mike Sander’s fat under it – as rust protection. And what must I say, I already have rust base on the grooves (covered by the plastic cladding). See pictures. (are the front advice boxes – in the back is still everything i.o. – so at least no rust base – but the color is still slowly fluted because the cladding scratchs on the paint) Will turn my car into a dealer on Monday. What to do here? Fuck man – the cart is only four years old. Pope