I have one of the one belt machines. It is badged as a Dual Tumble Kenmore. I turned up the water level control to where the high setting fills to the tub light lens. I set it to the lowest setting for washing to get good throw and drop action, but turn it to the highest setting for the rinses. The two vane tub with the reversing tumble action is a clear compromise between saving money by using as much of the old machine as possible and updating it with the motor, timer and other controls. It is clearly superior to the first model that replaced it. Talk about a sorry-ass machine. After the anemic spins between water changes, the pump shut off before the machine stopped spinning and it was not a powerful pump either, leaving sudsy water spinning between the tubs that, instead of being pumped out when the tub slowed from the spin, fell into the sump and became part of the water for the next rinse. I did not know how good a machine the first single belt Space Mate was until I watched its successor perform. The first single belt machines went from a pump powered from the drive motor to a powerful electric pump, BUT, the pump was still located at the bottom of the sump so there was always water over the pump. Newer designs of front loaders place the usually less powerful pump at the bottom of the machine with a long, air-filled hose connecting the sump outlet to the pump. Any water that reaches the pump has to displace air to get there. Unlike the pumps that were located at the opening in the sump, newer pumps don't have the strong suction to pull water out of the outer tub as quickly as it is spun out of the load. That's why the machines often have to stop the spin to pump out the water and do preliminary spins to get rid of the greatest amount of water before going into high speed spins. The three belt Westinghouse design machines and the first of their single belt machines pumped out water during spin much better due to powerful pumps located at the outlet of the sump.