We bought a 10,000 pound smittybilt to load vehicles on a trailer. (no money for better brand). Since brand new the winch would run in either direction for about 10 seconds then stop for 30 seconds and repeat. Called smittybilt and they sent a new control box and controller and still the same thing happens. Is there something in these things that shuts the unit off if it gets hot? Could this be shutting off prematurely? Smittybilt won't help again since it was bought for a business and we returned a 8,000 unit that failed for another issue.