I just picked up this one a few weeks back as well. The kids have already given it a beating. I grabbed a torque converter for it (lots of small hills in yard), but am realizing that the engine mounts will need relocated for it to work. I might just let them run it as-is and find something else...
I’ve got the same cart for the kids. What other users are saying about the oversized nuts being used as spacers is correct. I’m attaching photos of it for reference, hopefully you find them helpful.