Captain Crash....I have a spare 3ft gas bottle if you want to borrow (long term), its only for CO2, but I can get them refilled for £7 a bottle, let me know if it,d help, those little cannisters run out far too quickly, usually in the middle of a weld that you want to get finished
also have plenty of clean scrap sheet steel if you want to have a practice on sheet etc.
cheers
andy