Im looking at buying a John Deere 6430 Premium 40k Autopowr with 9000 hours on. Theres no loader on it although I would put one on it. It wouldn't get much hard abuse mainly loader tractor with a fair chunk of road work involved. it would maybe do 500-600 hours a year. Is it likely to just be a headache giving bother? Anyone any experience taking these Autopowrs into high hours. I know the 30series are troubled with head gaskets and injectors, I really don't fancy a Vario going wrong too...