Hi. Out in France for a few months and just gone to change the gas bottles over (2 lightweights). At the last service the gas pipe from bottle to regulator was changed to one which is hand tightened by a big plastic wheel. While it fitted the now empty bottle perfectly I'm damned if I can get it to fit the full one. Removed bottle and pipe from locker to make it easier but to no avail. Any advice would be welcome before it throw it nearby canal. Thanks.