I have the opportunity to purchase a used walker ('96) with a never been used re-built kohler 20hp engine. I am skeptical about this purchase except for the fact that the dealer that I am buying it from guarantees me that if anything goes wrong with the machine that he cannot fix on the trailer, he will give me another walker to use until it is fixed. He assures me that the machine will be "gone through" in order to fix any of the machines shortcomings (the minor stuff) and ready to rock for the spring season. the price is right @ $3500 but I would like some input from whoever is interested in offering some. Thanks! By the way, i do not have a use for a mid-mount ztr as most of my properties are medium to small.