Hello,
A better fix might be to use a sintered bronze bushing if the plastic wheel has enough meat to do so. I think better hardware store sell these bushings in various sizes.
Drill out the wheel and press in the bronze bushing.
Regards
Jeff
Folks,
My brother did a nice job of drilling out my four wheels to 5/8" (as mentioned above) and pressing in bronze bushings from True-Value. Nice and "true".
Rocky