Thanks for your replies. Probaby will head to the shop next week. I'm sure they'll also be able to tell me if something isn't what it is supposed to be.
I just thought I still had plenty.....and t have it suddenly run out is pretty annoying. However, I did not expect it to last me this long to begin with. I think the GTT cricket perhaps is a torch that does not use the gas that quickly. Or perhaps I do not have a clue, since it is the only one I ever worked on