if you can't get a temp gauge, just remember water boils at 212, thats just at the low end of the spectrum for proper temps. lean it out some since you know you're rich. try like 1/4 turn (cw) then run it for a while and drip some water on it or even spit on it and see if it boils off.youll get a feel for how fast it boils off compared to the temp, 212 will barely make it boil so itll just sizzle slow. 250 or 270 will make it boil faster