Mystery leak came back again. Sears repairman came out and seemed stuck on the idea that the drain line (inside my wall) was occasionally backing up and that was causing the flooding. When I insisted that if that were the case, the wall or the back of the washer would have to be wet (and there has never been any sign of water there) he moved to a different theory. He said that if the tub was off center (tilted toward the front after a spin cycle) then the water inlet would "miss the tub" and pour water down the back of the tub. Does this seem credible? My question is how can the tub be that far misaligned so that the water does not even hit the tub? Any help would be appreciated as this is driving my wife crazy.