Hi, I've considered this but didn't want to deal with changing the wheels but I guess that is going to be the best option. I recently added a stand alone gumball machine which does great. I hate to put 2 of the same item but for profit reasons, I suppose that will be best. Can you link me to the correct gumball wheel for a Northwestern Triple machine like the one attached? I used to have a few locations back in the day but I bought everything in bulk so everthing was interchangeable, I've never really had to worry about buying the wrong item. I looked on ebay but they all look different.