Speedo drive boot
Just in passing, as it were, I think it was on the HUBB that I read about rain getting into the gearbox of airheads past the little rubber cover on the speedo drive. I got a new one (cheap enough,) as the old was slack and probably wasn't very effective. Well, the new one is nearly just as slack so I've put a little cable tie on it to grip the drive and to make sure that rain doesn't get through. Seems worth the price of a cable tie; the less rain in the box, the happier I'll be.