I have one of those 2ring Camping Gas stoves that screw on to the top of the gas bottle. My problem is that the threads on the appliance are completely flattened and will not grip in the gas bottle. This is as a result of I lending the little stove and the person thought he was preventing a gas leak by over tightening the thing on the bottle. Can anyone think of a solution to this, can it be re-threaded or can the part with the thread be replaced. If anyone can tell me where replacement parts can be obtained in UK for these stoves. Any help appreciated. Thanks...