The black hose coming off the t-stat goes to the wax idle unit? Don't have one on mine but have an "extra hose" that I'm trying to figure out where it goes...
I did end up going with Samco hoses and racebikebitz hooked me up. I sent an email to Samco the same day I started this thread and they directed it to racebikebitz, who answered immediately (same day if you don't count the time zone difference). Can't beat that for customer service and had I not left for vacation before seeing that email, I would have seen that they also sent me a code for a 10% discount in that email as well.
Unfortunately, it's taken me longer than expected to get them installed. Broke a head off a bolt on one of the joints going into the top of the engine and had to deal with that before I could get everything in place. Almost done now, should be back up and running tomorrow morning.