This washer came with our house and Im not sure how its supposed to work, the washer tumbles and spins at the beginning of a cycle, but after the first wash, and into the rinse, the clothes just sit and the motor humms away but nothing is moving. Water is getting in, but everything is sitting at the bottom of the washer until the final spin cycle clicks in then the motor fires up and spins the clothes out fine. Ive checked and rechecked the loads to balance them, but nothing is helping. Any suggestions?