You should have contacted Bill, or Phil in partsshop! Bill was able to get my a charcoal filter for $25 about 6 months ago.
Anyway, maybe at the next meet, I could take a look and see what's going on with your car. And we will have mine there too, maybe that will help us go through the process!
Can't wait to meet up again.
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)