Hi Tim,
Those were the ones that failed me... well only one did. Maybe I got a bad batch.
After pushing the loaded cart around at the end of the day to park it in a hole I had cleared out in my garage, I decided from there that I should get swivel casters all around... especially if I was going to be using the dolly in the future.

The wooden frame was dirt cheap and easy to make. It was a GREAT idea and service to fellow bolters to put that in the tech tips. SALUTE!
Jerry