All, I'm considering buying a 500 SE which has a couple of small nigles. There is a bit of rust bubling under the repeater on teh fornt wing and some rust under the rear window. Also the seller says the aircon needs regassing. I can get the car prety cheap and am not worried about the front wing rust but am seeking advice how big a job correcting the rust under the rear screen is. Further is is likely that the air just needs rear gassing or are these aircon systems a can of worms? the rest of the car is very nice and even the leather interior shows no signs of wear after 148k miles.

Any advice would be greatly apreciated,

- Douglas