Problem solved - I think I renewed one of the black gromets and also used the pdfe tape. Pumped up the bottle and did not see any bubbles when held under water
Fingers crossed for the real test when I lite up
2017 Ethiopia.5 weeks.
2018 Marrakech 2 weeks.
2023 Thailand 8 weeks.
Always on a Thorn Raven/Rohloff hub.
I suffered from a leaking gas stove when camping in the Pyrenees once. I fixed it with a splash of brandy - the liquid lubricated the rubber seal enough to stop the leak. So the lesson learned was to ensure there was a bottle of brandy available when camping!