On our last outing, I noticed that our range is burning yellow. That means a carburizing flame (too much fuel or not enough air). I replaced the propane regulator with a new one last Summer and it is keeping the 11" WC as it should. I can't find any air adjustments on this range. The air inlets are wide open. Is this normal? I'm used to seeing a nice blue flame on propane appliances, but this MH is relatively "new" to us. We've had it out a few times, but it spent many months being remodeled. I'm sure if the flames were yellow before, I would have noticed, however. Not sure what is going on here. Puzzling. Is there a gas adjustment?