Hi, I have a JABSCO 74001 2460 electric toilet pump. When I press the flush button the lights dim and it makes a slight noise indicating its getting power but that's all it does. There is a slotted shaft sticking out the back which I assume is the motor shaft. I can use a dime to turn it about an 1/8 of an inch until it stops then it will flush after pressing the flush button again. Sometimes it has to be turned left others right I guess depending on where it stopped after last successful flush. do I need to replace the entire motor (maybe the windings) or would a flush rebuild kit do the job. Thanks, Charlie