Not Ranked
Earl,
That I don't understand. I don't even have any weights on mine at all. They are just like I put them together and I have never had them move an inch and I have put some 4,000 pound cars on them. I called a friend who has basically the same set up that I have and he said his had never tried to slide even when he had them out on his concrete driveway which has a smooth finish. That front lift bar on mine is so heavy I have to use the floor jack just to lift it when I want to take them apart.
Ernie, Excaliber, drove his Cobra onto them with no problem at all.
Ron
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