I have the same thing with my rear bumper. Except something has happened because the driver's side of the bumper is slightly lower than the left side. Steve (MBenz) once gave me directions on how to remove that one... I think I will have to get those files (I have them at work) and get to checking that.
Anyway, AMG142, do you have any quick directions on how to change that? I have some pictures, but if you know, would you mind running through it for me? Thanks.
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!)