That one screw has to be, excuse the pun, screwing things up. Shake, jiggle, pound, but use excessive force only as a last resort. I can't think of any other way to get that out, as it pretty much needs to be out to get the rest apart.

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95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K