my washer fills, agitates, and drains, but does'nt spin. The motor runs on spin and the belt turns the pulley and main shaft underneath. I took the agitater and inner basket out to see if anything was stuck--nothing. Then watched to see if top of shaft would spin, but still nothing. ------ Could the tranny be shot or the plastic sleeve on the bottom of the shaft be worn out & not lifting the shaft high enough to engage? any help would be appreciated thanks