I was in a local Burger King and overheard a guy talking about the two 3100's he had recently bought. (He didn't actually say whether or not he bought them new....just that they were "fairly new"). He was talking to another landscaper, and said both were leaking at the rear main seal. Needless to say, he wasn't happy. He did say that he had owned quite a few Kubota machines of one type or another, and was pleased with all but these two 3100's.