Had the same problem for a while. Eventually, I just pushed down harder and it filled (at least to a good degree) without having too much spray outside the unit. In my case I think it was a matter of technique. Hope that's the case with you. Also, when you do get it filled, remember that it won't start in the lighter mode. You have to start it in torch mode then switch to lighter. If I've got it set to high, it often goes out when you switch to lighter. Keep trying (for a while!