I have run my 485R going on three seasons now and not once has a belt, bearing, chain or part been a premature issue and I run the machine over nearly 6,000 acres per year, with proper and documented service; according to the book, and dealer and we do the majority of all non-warranty work ourselves and never have a bit of trouble, even when time is of the essence.I periodically view your postings and have to question their validity. How can someone have so much trouble with a combineIJ For one thing, belts and chains should never be a warranty item when failure results due to a rock or other foreign object. If they were, we could never afford to own these machines (no matter the brand) because the insurance cost associated with frequent warranty claims would make it prohibitive to warranty. I work with two Cat dealers, the sale dealer for warranty service and parts and a neighboring dealer for parts (I live on the border between two dealers) and not once has parts availability been a problem. The one thing that I have learned about the Cat dealers is if you want them to cater directly to your farm you just have to ask. They are more than willing to customize their parts support to you and your region's customers as long as you schedule with them. And when I mean schedule, the dealers have many ways of supporting you, you just have to decide what's best.