I'm hoping someone can tell me what I'm doing wrong. When I cook pork butts in my MES I put them on the top rack with a foil pan on the rack below to catch the drippings. My problem is when it's time to foil the butts, my drippings have all burned up. Last time I even put a can of beef broth in the pan when I started to see if that would help. I'm cooking at 225 with a tile over the heating element. Anyone have any advice?