I thought the wood trim pieces were actually plastic? I got a light surface scratch in one of mine and I just sanded it with some #600 and then used some polishing compound. Worked great.

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'06 X5 4.8is, TiAg/black, cold weather pkg., comfort seats
'07 750Li, TiAg/black, sport pkg.
'05 Ford F350 silver met./slate gray, Lariat, 6.0 PSD, CC, DRW, FX4