Just got a 24" Smoke Vault from Camp Chef and am converting to gas. I called Questar (our local gas co.) and they said to use a #49 gas drill bit given that we live at 7000' ASL. I have drilled the orifice out with that size and have only done the "curing" or "burn-in" process. I found that the control had very little range of control- when I went to a little below the "Med" setting, the burner was almost off and when there was even the slightest breeze it simply went out. The flame is entirely blue. Should I drill out the orifice more to let more gas through or is the problem the control? What says the brain trust?