Texas BBQ Posse pitmaster Marshall Cooper finally got his new Jambo J-3 pit on Thursday, after being delayed by the ice storms. In typical Marshall fashion, there was a fire going almost as soon as the J-3 was parked in the driveway. Marshall has been smoking meats for over 25 years and keeps intricate notes and meat maps from all his cooks. Here are some notes from the initial cook: Friday, 2/11 at 11:12 pm "I've staggered about 58 pounds of meat onto the pit since 1:30 pm today. Fire management is easier than you would believe. The desired pit…