I have two pro magnums that do the same thing. When the hopper has corn in it, the spinner plate will occasionally work or most of the time will turn a partial turn and stop. During the spin cycle, I can take a stick and help it go and it'll spin fine until the timer is up. When there's no corn in the hopper, all test spins are perfect. It's like the pressure from the feed is causing the spinner/motor to strain and not turn. The feed is clean and not clogging at all in the hole.
Does the funnel help with any of this or do you think there's an actual motor/spinner problem? I plan on sending them in for warranty replacement but I'm willing to bet that they send them back stating no problem found. The batteries are new and have tried two different sets of new batteries with the same results.
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