Hi I wonder if any of you have carried out repair work where dissimilar metal corrosion has taken place? I know the CL500 can suffer on the doors and C pillar/wing joint. So how was it tackled? What was done to stop reoccurance? Was/is the repair long lasting? Are there any products which can be sprayed into the doors etc which will 'isolate' the metals from each other or mitigate the effects? Could a sacrificial anode help? - has anyone used them, what did you use, where did you fit them?