OK, sounds looks like you tested the pump with it isolated so you need to fix/replace it. I guess you have a big enough test hose and adapter to connect the Mityvac right at the pump. I don't so that's why i suggested connecting the Mityvac at a nipple and blocking off the big hose at the booster with your thumb.

Your booster reads like it's leaking as well so you'll want to replace it. It has a relatively large vacuum chamber so if you see a leak over a short period of time (3-4min) the leak is not insignificaqnt.

Once you've got the booster replaced and the vac pump rebuilt or replaced you'll need to move on to the accesoroies operated by the vacuum. there are a lot scattered over the car for locks, climate control, etc and I would guess there are some bad ones in your 20year old car. we can deal with that when you're ready as there are techniques and tricks for troubleshooting them as well as replacing them.

Regarding LA prop tax: I am paying about 1.25% based on my purchase cost of the house (bought 8/99). this is the norm. I recently refinanced and value is up over 50% with no major home improvements. In fact all the properties in the area have, so comps will not help my case. Is there a risk that I'll end up paying higher property taxes if I try lowering it by traditional means. sorry abpout this non MB issue. i'll cool it off after this.

__________________
1972 450SL
1982 300D Turbo