Hi MaryKay. I'm sorry I can't answer your specific question, but I would love to know where I can order a Janty 801 to 901 adaptor in the USA. I'd like to use it for my JS, but the Janty USA site has been showing them as unavailable for ages. I asked Ethan when they expected to have some in stock. His reply was that he had no idea. I'm appreciative that he replied, but it was less than helpful to me in locating one. I sure would appreciate if you, or anyone who reads this, knows where I could find one. Hope someone is able to answer your question