I'm about 99.9% sure that the evaporator isn't leaking. I still have a slight squeal with the belt when I fire her up, all it takes is to give it a little rev, and the squeal goes away - with the belt anyway. As for the A/C compressor.... that's a constant squeak. For under $150.00, I can get a new compressor (wasn't a clutch rebuild kit that I saw earlier).

I never thought of getting a non-functioning air pump! I'll check the local junk yards and hopefully I can get one for cheap with the few E320's that are around here. Appreciate the tips!