I use my hudy on my 12th scale and it seems to work just fine. I just use 4 front wheel bearings to take up the slack. Basically I put one bearing on with the larger side touching the inside of the setup leg then put another bearing with the large side touching the outside. Then take a small shim and put it on and use the wheel nut to tighten. It seems to work fine until I get my 12th scale.