Well, you know we fiddled for a couple hours with moderate improvement but not quite enough. Admittedly we did not take off the tyre and in hindsight perhaps we should have. Anyway, we bumbled into Syria (Aleppo) and surprisingly found the best bike mechanic in a back alley! Three tweaks and he was done. Thirty seconds. Amazing! We will stash your tips away for next time. The Park Tools website is particularly good. I think we need a bit more practice though to come up to speed.