Doug,
Just a shot it the dark & you may have already checked this but the only other thing that makes sense to me is if maybe one of the wires to your fully-up microswitch is somehow being pinched & shorted with the upward movement of your lights causing them to stop to soon. Seems you've checked about everything else you can & nothing has worked so far. Electrical problems are a real PIA - but I don't need to tell you that do I! Good Luck!!
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