Total GymUpper Body System

I had bought these for use on my Total Gym Apex G1, and I am not sure whether or not these were meant to be used with that model but when I fastened on the dip bar attachments, the frame of my Total Gym seemed a bit too narrow as there was some definite wiggle room after it was locked in. They still worked, despite the wiggle room. Haven't tried the pull up Bar attachments, but I suspect the amount of wiggle room will be the same. Personally, I would prefer that they fit more snugly on the main frame.