drewleroy, good job. Sounds like the max fuel delivery screw was adjusted for too much power. Located under the diaphragm, it needs to hit before before the diaphragm spring. Some adjust it for "more power" but perhaps that's the reason for your broken washers.

wolf_walker, I'm going to sample mercury from power plants. Mercury is next on the list of stuff to be regulated by EPA, and the plants want to know what they're sending out before the rules hit the street. It's not much (in the order of 10/millionths of a gram (sic) per cubic meter), but then again it does add up over time. One has to be pretty exacting to even measure at that level. The toys I use cost in the six figures.

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daBenz - 1970 220D