**UPDATE**

So I took the DV out again, and replaced the crush washers. I did not replace the seals.... The aren't leaking, so I didn't think it was necessary to replace them. I noticed once the DV is off, the piece that the crush washer sits on will move around a little. After changing the crush washers, Torqued to spec, and put everything back together. I still have nailing, exactly as before. When I loosen the copper fuel lines at the injectors, all squirt fuel and I could not find one that points to the problem. The car will stuble more when I loosen each of the fuel lines.

So I decided to call a trusted mercedes indy mechanic here in town. When I told him that I took the DV valves off and replaced the o-rings, he said that the "pinging" is normal and should go away in 3000 miles. What do you all think about that?

I was thinking that I would get in there one more time and make sure all the parts down in the IP are OK and none are cracked, broken or stuck.