Not sure if this is the best forum to post this question. I have a John Bean EHP system 2 tire changer with the rotary table and rim clamp. I was wondering if anyone has tried any of the adapters to mount smaller tires like ATV or Lawn tractor tires/Rims? Smallest rim I need to mess with so far is 6". I see several sellers on the bay, but none so far show them mounted on the clamps on a tire changer. Bay # 275913657449 if anyone wants to see what I am talking about. Do they have a universal fit?