So you got the rust bug? When I had mine stripped down for complete restoration I had rust in three places. The rear window bottom piece was very bad - had new piece installed. At bottom inside of driver's side front wheel well had to get new metal installed at at front of driver's side wheel well also new metal - rest of car was perfect. Just my experience - hope it helps you. On my valve cover gaskets - found out the after market ones were too porous compared to Mercedes - got 2 new ones and will install this week - end should cure the leak!