[PChez]

That is a good question. Why do you think the wood is deteriating. Can you see any of the wood? I looked at mine today to see what you were talking about and mine has four rollers. Two on one end and two on the other, but in the bottom of the slide. These rollers roll on a T beam and act as guides more then anything else. The rollers are mounted sideways on mine, but I couldn't see any wood anywhere. Mine is all metal in the base of the slide. The side sheets are also metal on the Scenic Cruiser. So I am not sure about your TM. If you have extended warranty, I sure would not mess around with it. Call the insurance you have and explain the problem. They will send a rep to inspect it and give you the authorization to get it fixed and pay for it. Probably all you have to pay is the deductable. On mine it was fifty dollar deductable.
Good luck.