Anybody have any service info on this machine? Working on one with a hydrostatic trans problem. I don't have a service manual. There is 3 test ports on the trans one on top and two on the bottom. I'm geussing that the two bottom plugs are for high pressure relief, fwd and reverse. I need to know if the top one is case pressure or charge pressure and what the charge pressure spec. is. If it is case pressure does the book give a spec.? Which leads to another question. It appears by looking at the lines going into the trans that it has an internal charge pump. Any info would be greatly appreciated. A schematic with specs would be phenominal.