Folding Scaffold Brace

I have a folding scaffolding, which is great when not in use. However, when folded complete, trying to roll it can be difficult as the sets of wheels are pretty much right next to each other and would tend to topple over. So in order to roll it you have to unfold it slightly to make it easier to roll without having to fully expand the scaffold. But because the wheels are multidirectional, the scaffold would either collapse on its own or want to expand further when all I need is to move it from one area to another without fully expanding it.

I used TPU just to make the "c" parts easier to slip into the metal frame.

Not sure about PLA/ABS/PETG but may need to make the opening a bit wider to avoid it snapping.

v1 is 6 mm opening
v2 is 10 mm opening
v3 is 20 mm opening

v2 is what I originally printed using TPU but I've narrowed the opening since TPU is a bit more flexible and thought a smaller opening might hold it in place better, though v2 worked fine right now.