[dijit]

If you get the Xikar fuel it has a nozzle adapter to drain the lighter. Even though they are sputtering or even wont light at all you will find they still have a little pressure in the tank. Drain them completely and refill, you may have to turn the flame up and down a few times to finish cleaning it out. But if it isnt completely clogged it should clean out pretty well with the better fuel.