I found this posted on a different site, the posted info might help someone
"What 4 Post lift NOT to buy
Well I decided I'm out of floor space with the car collection so I decided to look for a 4 post lift. I looked at a few ads on line and saw what looked to be a good deal on a Direct Lift Pro 8000 Extra High located about an hour and a half away and was under a year old. Price was right so I called and setup a time to go see it. The seller had a corvette on top and a Nova under and the lift was like new and hardly dusty. He bought it new from Greg Smith equipment. He was selling it because he was moving and didn't need it at the new location. We went around on the price and struck a deal. He took it apart and I went back a couple of weeks later and picked it up with my trailer. So, fast forward 4 months and I'm just now getting around to putting it together. Now to the point of this post. In the assemble something was seriously wrong. Things were not lining up and tightening up so I started doing some measuring. Turns out the left runway was just under 9/16 shorter then the right runway. I double and triple checked and this was correct. Definitely a defect. The complete assemble was racked and overloading the cross-member and uprights. I called the manufacturer and THEY SAID they never heard or saw this before and didn't really seem to care. Since I was not the original owner I was S..t out of luck. I called Greg Smith and they basically had the same response. SO BEWARE if you already own one, better check it because I really doubt this is the only one out there and if you decide to buy a new one, check it completely after assembly before you use it. The original owner never saw this problem and very possible could have had a serious problem in time. Direct Lift really doesn't care or they would have at least showed some interest or concern. All they cared about was the Warranty didn't apply anymore because I was the second owner. My solution was to make 2- 1/4" thick shim plates to make the runways equal in length. I also changed out the bolts with longer grade 8's and lock nuts. Maybe steer clear of this manufacturers lifts all together considering their lack of response and concern."