Hoover SE220, will not fast spin. I have changed the brushes on the Motor after drum stopped turning about 4 months ago and worked fine, but now drum will not fast spin. Get to number 7 on the cycle and drum spins slowley and pump starts to run and after 10 seconds or so when it normally speed up it just slows and stops. I have changed the main rotary switching unit after I found a field mouse jammed in the contacts but even with a new module it does the same thing, HELP.