I have a Bachmann J72 with the wheel quartering issues and have contacted Bachmann about buying a new wheelset. They can only provide wheelsets for J72s made in in China (and not made in Hong Kong). I have a Hong Kong made chassis.
Is there a difference between the wheelsets from Hong Kong and China? Could I put a China wheelset in a Hong Kong chassis and expect it to work, or are the axle diameters/gears different?