So I decided that I’m too old to cope with another bike with no reserve. My current bike has a reserve but it’s so tiny it hardly stops spluttering before it starts again.
So I made a threaded bung, cut a hole in the tank and welded it in place. It should give a decent reserve, and I can make it larger by using a longer banjo bolt. I’ve got a twin tank in-line fuel tap that fits nicely in the side panel grommet hole you can see on the tank there.