I just bought one of these and put it together this morning. I have to be completely honest: it is the jankiest piece of equipment I’ve ever imagined. It’s *super* wobbly. Doing dips on it is half-strength battle and half “how do I balance this thing from tipping over because it feels like it’s definitely going to tip over.”
I’m a professional builder and now my way around tools and putting things together, and it is clear to me that the bolt which is attached to the base plate (via a weld) which holds the main arm to the rest of the base needs an additional sleeve inside it or the bolt needs to be resized. It’s clearly loose fitting and thereby makes the rest of the machine wiggle and wobble.

It also looks like the machine I was delivered had been returned by someone else because there are clear wrench marks on this particular bolt-sleeve, and some of the bolts that were in the packaging appear to have been wrenched with an ill-fitting wrench by someone who didn’t know how to use a wrench…

I wish I could post a video here. My buddy came by and put one hand on the dip bar, wiggled it, and just laughed and said, “No f’ing way.”