I was able to get a 16' trailer load of 2x4 scraps today for free. I want to burn this at about a 50-60% ratio to cord wood. I know if I just throw it in the way my eko 40 is set now it will puff. Do I need more or less primary / secondary air to control this? I have the newer controller on my EKO and usually run it at 60% with wide open fan shutter.