OK, to answer the question, "are the hub caps on the wire wheels the same as the Henry J?"
They look just like them but they are slightly different.
According to a conversation I had with Lance Johnson last fall, the Henry J caps are not the same ones used on the Dragon wire wheels despite looking just like them. He informed me that the Henry J caps can be modified to work on the KF wire wheels but it's not an easy/simple modification. You may want to contact Lance for more information. His phone number and contact info are in the latest membership list quarterly.