I'm wondering if anyone has seen this issue. Our 2 speed pump (third season on our 24' AGP) would not start last night. Motor just hums - breaker would not trip. Did a little research, then pulled both the start & run capacitors. I suspected the start one might be bad, but the run capacitor looked a little rugged. So this afternoon, with two new capacitors installed, the motor still just sits and hums. But a little twist on the slotted motor shaft (exposed when the end cover is off to access the start capacitor) will get the motor running. Ran it for 5 minutes - stopped it - would not start. Got it running again by manually spinning the shaft and let it run for two hours. Still no go on its own. Is it possible that Grainger sold me a bad start capacitor? Should I get another start capacitor? Could this problem be caused by something else? Thanks for any help / suggestions you can provide!