Once assembled the unit may wobble longitudinally. Contacted the manufacturer (who responded quickly requesting information) but failed to provide a solution to the problem , maybe because I did not but directly from them. The unit still works OK but beware of possible pinching where the 2 part of the frame come together, I would also suggest that additional holes are provided on the part where the feet lock in for the leg press in order to be able to adjust for height . Have a video of how it moves, but too big a file to attach