I put my Butt on around 4:oo this afternoon. Completely cleaned the egg, sorted the lump, used the chimney as Elder Ward suggests. I have struggled all night keeping the temp up. It has stayed right around 200 to 225 degrees but I have the lower vent open wide and the daisy wheel open also. I calibrated the temp gauge before I started also. I've kept it no lower than 200 but just checked (3:00 A.M.) and lump is just about burned out. Had to add more lump. Where did I go wrong on this? Thought I had plenty of lump to start. Should the lump be up to the top of the fire ring? It's going again better now that I've added lump but there was almost nothing but ashes when I added. Any ideas where I've gone wrong? Again, I've left the vents almost open all the way and it never got above 225 degrees. Could my gauge be wrong? I checked the internal temp and it was about 150. I'm kind of worried about eating this now. Have I already blown this? No polder or Redi-Chek. Thanks!