You both hit the nail on the head. If I could get the Tron working I might feel compelled to sell the Xeno stick as it is in nice condition( or make a Xeno CP

) Also, the Torx screws do look a little rusty so I'm guessing once I take them off, I won't be putting them back in, and I don't want to ruin the stick.
I was looking at the parts list for the Tron repros from the post, here it is again:
43-0013-00 2-56 X 3/8 SCR SLOTTED ROUND HEAD MS ZINC PLATED (4) $0.28
95-4278-00 SWITCH ASSY DA3 TRIGGER (2) $2.40
90-1012-00 SCREW,#4X3/4 PHIL.PAN HD SHEET METAL TYPE AB (4) $0.36
96-4101-00 TRIGGER SWITCH BRACKET HD J/S (2) $4.41
50-8357-00 SPRING RETURN F/TRIGGER SWITCH F/ ANALOG JOYSTICKS (2) $1.52
95-4400-06 THUMBSWITCH ASSY,BLK, DA3 (2) $10.49
96-2542-02 BACKPLATE HD J/S BLACK 2 HOLES (2) $2.30
Either I don't know how to use Happ's search function, or they have renumbered everything. I am having trouble finding most of this even if I search by name.
When the base arrives, I'll have a look over it and take some measurements and post back here. Then I can think about what to do.