if I understand your critique correctly, the Draganfly drawing are not quite as accurate as you/we would like,
The two drawings are lifted from any of several but different Triumph parts catalogues, just putting them together on the same page has caused confusion.
If your bike is a 69 T100, the drawing on the right is irrelevant, as are parts #49 and higher in the list; otoh, if your bike is pre 64, the drawing on the left is irrelevant, as are most (but not all) of the parts between #1 and #48 on the list ...
The Triumph Catalog 500 1969 page(s) is/are better
... if your bike is a 69 T100 ...
In this drawing the spring is part # 12
2 of.
the spacers (called distancers) are part #'s 16 & 17
#16, 2 of again, have two functions:-
. they space #11 and #14 apart mounted on the #3 studs, the space between holds the #12 springs and #13 buttons;
. on the #3 studs, #16 also stop the springs and buttons being pushed out from between #11 and #14 when the #5 "Gearchange quadrant" is moved by the gear lever - #11, #14 and #16 enclose #12 and #13.
Otoh, iirc (a while since I have a 500 gearbox apart), "Distance piece" #17 fits over the #5 Gearchange quadrant's lower shaft?
Just trying to support you with accurate information, if I possibly can.
I do not use or recommend particularly the Draganfly parts listings. They are basically a good time saving idea - the user should just be able to click on a part and the website makes up the order from the clicks. However, the basic good idea is messed up by silly confusing compromises like this webpage and Draganfly's generally poor stock levels, which see users clicking on parts and then being told they are not in stock, so the user has to order them from another dealer, with whom he or she might as well have placed the whole order in the first place ...