I bought an Accuflex shaft from them a few weeks ago, just to see if it was like the same one I had wayyy back when. I can say it does play exactly the same as the one I got from Jody. Keeping in mind, that is just 1 model from all they sell. (JLG Ultraboom)
You could also email Hubert at Monark and ask about them. He may have been stuck with a lot of the original stock.