Hi Paul, I’m surprised nobody responded yet so I’ll chime in. I did the canisterectomy a few years back, and I got rid of the valve . I do believe you should still leave a hose and run it down under the bike someplace safe. Once in a while when I fill the tank to the tippy top while on the center stand, some gas will dribble from the hose if I don’t burn enough before I put the bike on the side stand.