I am afraid I am going to be faced with that same situation. I bought a 302 GMC engine from a guy in Austin that turned 360° when it was sitting in his garage. I was going to back up his drive way, but his wife insisted he roll the engine to the end of their drive way which was cement and slightly down hill, and then I pull my trailer along side of the drive. She was afraid I would back into her flower bed. About 6 feet from the end of the drive, one of the castors on his Harbor Freight engine hoist broke off like glass and the whole engine hoist turned over and the front of the engine hit the concrete. The engine is now locked up and I just haven't felt like dropping the pan and seeing what happened. There is enough other stuff on the engine that is worth the purchase price like a 6 bolt 6 volt flywheel and small clutch housing, but the whole thing is still sickening. My wife was along and she had no doubts that I could back up the drive way, but she keeps reminding me to be glad that neither the seller or I had our feet in the wrong place. And it gives me just one more reason to not even consider Harbor Freight stuff.