Have you got access to a welder mate? You'll need to weld the outer tube back on, or it'll continue to leak. Take the outer tube off, drill a couple of holes in it, and weld/fill the holes, then grind them back smooth.
If you don't have access to a welder, drill through both tubes and "pop rivet" them together. Not as permanent as welding, but good enough to get you out of trouble. Cheers, Terry.
