This is my son's machine. It fills okay, agitates okay, drains okay, but will not spin. Motor turns, but belt slips on motor pulley, and trans does not spin. Assume that transmission is bad, and needs replacing. Have a good bit of mechanical experience on industrial equipment (motors, pumps, gearboxes, and much more) but have never broke into one of these before. Looks fairly simple, but usually when it does, there is one trick that you need to know before you start. So, first off, is there anywhere you can get a maintenance manual to help? If not, what can anyone do to give that help? Secondly, how hard on a scale of one to ten is this to do? And lastly are there any special tools necessary to do this job?:) :) :) or:( depending on the answers