Our SE220 machine does now not wash properly and leaves undisolved soap stains on the clothes. The water level during wash and rinse used to reach the bottom of the door glass, but no longer does. I believe it is a problem with the pressure switch which controles the level. Looking on the net I have seen problems with 'no spin' and 'over filling', but not 'under filling'. I have checked suppliers for a replacement switch but only find that Hoover have discontinued manufacture and no one appears to have have any spares. Any suggestions appreciated.