Buck, small pieces of meat can be very difficult, and can be hard to keep moist. 2.2 pounds is really tiny for a brisket, and at that size, it means it is a piece of "flat", which can be dry at that size. Also at that size, it is likely USDA Select, which is quite lean. Stick to USDA Choice or Prime for smoking, and if possible, smoke a whole Packer brisket (Costco has great whole Prime Packers 13-18 pounds at a great price). The leftovers freeze great! I know it took me a while to get over my fear of large pieces of meat. But they are economical, and the quality is much better.