I am looking to purchase a used combine for the farm because I am tired of waiting on custom harvesters to get to me on their time. I combine approximately 200-400 acres of beans/wheat/milo and some corn depending on price every year mostly on flat land. I am looking at a used 1640 (2900 engine hrs IH 466 engine '85 model) and need help evaluating the machine! I have been around a good many combines but never owned one. Please help!-- any advice would be most appreciated.