A mans gotta do what a mans gotta do. Here is me a work. I spend a lot of time out the back of the store in the 'Wacol spa retreat' contemplating why so many people have bloody barbeques. Anyhow I have got my skills down and can now fill 4 9kg bottles in around 10 minutes and up to around 6-7 at a time. You got have the mean skills if you want to be a gas master. GAS MASTER GO FASTER!