I had this happen one year - OH solved the problem by means of a blow torch............

On a more safe note, make sure that you pull the paper wick out up some distance out of the sulphur as that seems to help.

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Some of us live in the past, always talking about back then. Some of us live in the future, always planning what we are going to do. And, then there are those, who neither look behind or ahead, but just enjoy the moment of right now.

Which one are you and is it how you want to be?