i have a miles kelly climber i actually am big 250 lbs,,,, i bent the teeth on both and good thing my neighbor welds so he put some braces and rewelded stuff, besides that its loud difficult and a pain to climb,,,, the hold all weight on the top part and lift up the bottom not to mention how hard it is just to get the botttom part bungies on your feet! cant even use it it the morning its so hard not to clank it together once ya know~!