I built the gas forge pictured, I read about a few different types of burners and thier capabilities, I decided to go with the 1" burner design shown. I used a 1 1/4" tee and a .030 mig tip, the tube is about 11-12" long and goes directly into the forge just down to the inside of the chamber. Inside dimensions are 2.5"x 4"x 9". The burner seems to flutter a lot as well, spitting fire out the front. And just runs very inconsistent. The way I have it set up I am running about 20psi and still cannot get the inside of the forge to get hot enough to get to a nice yellow hot it just gets to a orange glow. Any suggestions?