Hey there need some advise I just bought a new dual fuel Masterbuilt smoker and while I was seasoning and test burning the unit yesterday. I couldn't get the unit to burn in the low 200 deg F. On low with gas the lowest temp I could achieve was 340 deg with all of the vents closed. I did read that i could install a gas needle regulator - but not sure how to to that. Has anyone else had the same problem? Does it sound like a faulty factory installed regulator?