I took the TDI Edge-HOG service course at the Divers Supply up here in Marietta, and it was worthwhile for me, because I had no previous experience servicing regulators. If you already have that knowledge, it would be a waste for you.Yes, it's blowing my mind. I just contacted a buddy who stated that they are not selling parts anymore unless you have the certification: "TDI Edge-Hog Service Technician Specialty." I know before one of the best-selling points with HOG were being able to get the kits yourself without a course, but now?
Coincidentally enough, this class is a virtual class offered by DRIS/Diver's Supply.
They do absolutely sell the Yoke to DIN, and even gave me the part number and price for it. Just based on appearances and my old D1, I do believe they are the same and I wish I would not have sold them now. If they are, and you're willing to trade a Yoke or let me purchase one I am game.
I'm heading out of town for a few days, but if you want to confirm the D1 DIN assembly will work for your D3s, I will try to find mine when I'm back next week.