I've just picked up a '93 in good shape and am wondering if any of you have any insights/help regarding this machine? It is basic in design, nothing too complicated. I've received some good tire advice about tires from you guys, but I am looking forward to hearing others experience with this or a similar machine. Anything to keep an eye on and so forth... P.S. the unit runs fine. I am curious to know if there are any common known flaws to this unit.