I am having some brisket woes. For some reason I cant seem to get the Egg to come down in temp. I put a 9 pound flat on at 9:00 and the temps went to 280 right off the bat. I have been strugeling to get it below 250 since. I have all the vents shut down right now to get the temps down. My internal temp is already at 185* I am begining to think this one will be leather. This lump is burning really hot and I don't know why. Any suggestions?