I've searched the archives and while I find some general discussion I don't see anything as for a solution. To wit: try as I do, I can not get my dome temp higher than 650. I see people talk of searing at 800 or 900 degrees. The last marking on my gauge is 750, so even fudgen with the distance beyond might be 800 if the needle is buried. I've calabrated it by the boiling water method and it seems well. I seem to have a tight seal. My fire box is properly aligned with the damper. I'm using BGE brand lump and it is dry. I leave the daisy off completely and the bottom wide open. The air holes are clear. Last night I even put in extra lump thinking maybe that was the problem. I had a fine, fine fire, but 650 or maybe 660 was the top end! Once I just thought I'd wait it out that maybe I wasn't giving it long enough...well after an hour of blasting away it started to lose temp. Am I nuts? What am I doing wrong?