Somehow, my center vent knob is broken in my 1995 C280. As pictured below, the manual airflow control is broken. It feels very loose, there is not resistance, and it only moves on the top portion of the line. Pic:



That is as far down as it goes and it is not functional. Now how do I access the other side of those vents so that I can hopefully fix the problem? I can take apart the lower part of the console, but am stumped on this upper area... Can anyone help me remove these vents so that I can correct the problem? Thanks!

Another, broader picture:

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
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!)