I've also came across this if the issue for v9 is the same as for v7III, i have a set of motogadget bar end mirrors with 22mm diameter. would i need to loosen controls and grip and push them in to create space?Your answer is above.
If you bought from the online Store linked above; https://gtmotocycles.com/products/gt-cnc-bar-end-mirror-sliders -- you would've gotten the right ones.
See if you can return them.
much appreciated