Seeking wisdom from those who have installed a lift

regarding the lift failure in post#13 (how appropriate): I would avoid this lift design. all the pressure works to pull the top of the lift posts toward the middle. If you look at some of the other lift pictures there is a design with a piece that bridges the tops of the posts. That way all the force is straight down, because the posts can't tilt toward each other. My 2 cents...
Doesent always load that way. End to end with a diesel pickup is a good example, or the guy with a 4x8 sheet of 5/8” thick steel plate under all the junk in the box. Or the farmer with 1000 pounds of fuel in his slip tank. Seen them all. I dont trust any hoist with my life…