Well, she just about ready for a trial burn to see if she'll get up to temp and hold steady. I'm not sure if I need another intake. The valve is 1 1/2" and the flapper intake is 2 1/2".
Sorry for the late reply! I DON’T KNOW HOW MISSED this post! The intakes should be plenty big enough, if anything you may need to back them down, or close them about 1/2 way maybe. But with the ball valves being adjustable. You will be fine, definitely don’t need to add another one.