I am doing a couple racks of baby backs (5 hrs) this Friday followed by an overnight butt (18hrs). Was planning on finishing up the ribs around 8pm, then starting the butt. My biggest concern is the original lump that I put in for my ribs might not be enough for the overnight cook. This is going to be a touch and go issue as to how much lump is left when the rib cook is finished, but was wondering if anyone has done this sequence of events and if I needed to look out for anything in particular. Love the forum, you all have saved me several times.Egg-N-Tino