Quoted from 27dnast:I have a 500. My experience is mixed.... had a game, while lifted, rapidly collapse.
Harbor Freight is middling quality, so not entirely surprised.
I just bought the 500lb a few months ago to move a AFM LE I just bought. It worked good, other than the mod I need to do. It operates on hydraulics, so I would think if it collapsed, it would still do so relatively safely? Was the game you moved pushing the 500 mark? A little scary. I'm starting to question my purchase.