He usually has boxes of them (cause he makes them in big batches), but honestly I don't know if he sells them loose.
His name is Duffy, and its hit or miss on getting a hold of him. My luck, the couple times I've tried getting a hold of him I usually seem to get him on the first or second try, but I know other folks try forever.
Best to just keep calling, leave the occasional message, and see what happens. He's a good guy, but a one-man show, not really an internet guy and basically has a shop buildings STUFFED with machine tools and many of them running at the same time and paying gigs not just 4x4 stuff. So answering the phone or doing e-mail isn't exactly a priority for him.