Review on OneTwoFit Power Tower Set - Multifunctional Wall-Mounted Pull-Up Bar, Chin-Up Bar, Dip Station - Ideal Indoor Home Gym Workout Equipment, Supports Up To 440 Lbs - OT126 Fitness Dip Stand by Mark Bullock

There are several of the short bolts that go into the pads.but also the upright handles. If you experience any binding or tightness if using them in the pads, swap them with the ones for the handles instead. If you keep tightening and they're not all the way in, you'll free up the blind-nut within the pad and it's impossible to correct the situation. (see picture) I'll update this review information once the seller can replace the back pad via separate request. Hope this helps someone out.Update: Got the replacement pad and hardware from China to complete the entire unit. Everything works great!