Plastic peices (broken) under valve cover

Well, I was all ready to ut a US Spec engine in my car out of fear that the timing chain had broken, and I find out that it is in one peice, is a double row chain, and that there are little peices of broken plastic (very old looking, and brittle) strewn throughout the area beneath the valve cover. I cannot seem to finish the jigsaw puzzle, so I can only assume the worst (though much better than a new timing chain and valves, etc.), that I will have to take the engine apart to fish out the remaining peices of plastic. I am assuming that these peices are part of a broken slide rail. Is there anything else that they might be? Also, does anyone have an estimate as to how much new slide rail installation should cost?

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10702312013187

[Benzmac]

The bad news is, if you find broken pieces of chain rails, you most likely have jumped time. It will be cheaper than the single row conversion and a valve job, but you are still looking at a heap of money.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM