Just recieved my smoker a couple days ago & decided to test out ribs& brisket today. I'm fairly new to smokers and as I'm cooking the meats the ribs already came out and have no bark. How do I create a nice bark on the meat? Wasn't sure if it was because I put the brisket/ribs in together. There was no aluminum foil around them and it was cooking directly on the rack with the rub. Please help, open for ANY suggestions.