It's always to check cartridges in advance by attaching them to the stove and lighting it. This can be difficult on long trips but I try and do it somwhere after buying a new cartridge just in case it won't work properly. I've never had a problem with a cartridge myself but I have been with people who have - with different stoves and different brands of cartridge. Just sometimes it seems that the pin on the stove and the depth of the valve of the cartridge don't quite match.

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