Where in the system is it leaking P/S fluid from? Is the pump covered with a thin layer of fluid?

If it's leaking from the pump, the reseal kit is pretty cheap, and the disassembly is fairly straightforward, with just a couple of tricky spots. But it's not bad, and I did it a couple years ago on my 300E and my pump is still dry.

Oh, and don't use ATF in the P/S system. I still haven't gotten all of that stuff out of my system, and I'm just hoping it won't start leaking again before I can replace the car.