I have a Jazzepipe given to me as a gift. It seems to fire once or twice then nothing. I chopped it up at the shank to see how it works and it is really neat but seems that the + & - are backwards. Also I wanted to put a 45° angle in the shank so that the curved stem makes sense as it does not with the current angle. However, I can't find a 3/8 copper rigid coaxial which is what Romaniac used to build it.