Had me confused at first!! Then me brain rather unexpectedly dropped into gear. Thankfully it didn't last for long.
Like many others. i tried the repair kit, £28 and it didn't work. Having to buy a new tap now. At £73,, it's just another typical Triumph rip off.
Avoid rebuild , as it seldom work's or lasts. I know two bikes that the owner tried a kit on the fuel tap. One didn't work out well, minor leaking . And the other failed within a couple of months.