This #3 on mine

Well, signing out for the night, but here's what my readings seem to be. Interesting thing is even when I tried to close the air screw as much as possible, the flame was still bouncing around really actively, just got smaller and more of it was blue. Think taking a kid and giving them a syringe full of liquid sugar

280 260 230 - Original setting 3/16" (2 1/4 turns)
300 280 250 - Second reading at 2 1/4 turns
340 300 260 - Screw at 1 3/4
280 255 225 - Screw at 1 1/2
290 270 240 - Screw at 2
280 260 220 - Screw at 0
360 320 280 - Screw at 1 3/4, popped baffle mod in

Fan control should be coming in end of the week or sometime next week, so I'll have to try that and let you guys know if that makes the flames act more mature (active, but not hyperactive movement).

Drysun that's much better right? The flame should be playing happilly no tantrum Flames should reach up for oxygen from window wash air. Most of exhaust is cooler spent gases in bottom of burn chamber. That was good work wish our comunication would of been better. If you had a setting at 0 I'm thinking you have a flaw in ajustment screw from welding and can't close intirely which may have been a problem from start with measurment with screw turns. measuring gap works best. Did you get more info from Bruce ?