First, I want to thank you for your charts. They are wonderful stuff for the beginner!
I acquired an old, but sturdy, Ullman 4-shaft direct tie-up jack loom. It had string heddles, which drove me nuts. I just finished replacing them with texsolv heddles. And, because of the scarcity of Ullman information on the web, I wrote an article describing the process step-by-step.
I thought it might be useful for you to have this arrow in your quiver, thinking there might be even more Ullman looms in Canada, than in the U.S.
Cheers, and again, thank you!