A local thrift store had this on C/L for only $65. They claimed they had tested it of course. No leaks, pump drains super fast! Only problem, no agitation. There is a buzzing noise from this part where the water comes in (am guessing it is a solenoid?)...that shouldn't have any effect on agitation, should it? The pulsator in the basket moves freely, the belt is not glazed...any ideas how to trouble shoot this? Next picture shows me pointing where the noise is coming from...

