Change the metal button of a S21G to rubber

Salut!

Got my S21G titanium with the copper head thingy today.
Since I really don’t like the metal buttons, can I just make the diameter of the tail bigger and put in a classic rubber button like the aluminum version or is there some other geometrics difdferent than the hole diameter?

Thanks!

Not sure if this helps or not but on a S2+ you can drill out the tailcap and install a rubber button.
It’s very tricky, my buddy ruined a few tailcaps before he got it right.
My guess is titanium would make it even more difficult.