I only like to inform you, that the diameter of a Ti collar is slightly larger than a Yo Eddy collar (32,0 to 32,5 mm). A Yo Eddy collar works also (but a bit more tight), I thought, you should know that!
Enclosed some pics of my beloved 93 Titanium - first with the original Ti collar (eight years ago):
...and additional with a Yo Eddy collar (my current built):
I still love it