Well my worst fear has finally come true... my kickdown has broken. For the past week or so it has not been clicking properly or at all, but still shifting atleast. Today I went to floor it and it would not shift down! Once I got to my destination, I noticed the black plastic peice had fallen off.... so I put it back on, but it would not stay. That is why it is temporarily Scotch taped on (desperate, I know). Is working ok for the time being though, albeit lack of resistance/pressure at kickdown.
Anyway, I have the part number for a new kickdown switch ($28), does anyone know how easy it is to change?
Thanks.

(I don't think it broke because of real over use, but because sometimes I just jam on it with all my force!)

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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!)