I am about to do my first long smoke by doing a pork butt over night. I am concerned that the drip pan on the back might over flow as in it states in the owners manual that it may have to be dumped periodically during smoking. I have a 30" MES, have any of you had to dump the pan during the cook? Could I just put a pan inside the smoker on the bottom rack to catch the grease? Thanks for your replies!