I am brand new to SMF as well as brand new to smoking. I was given a Masterbuilt electric smoker as a present and I am trying to learn how to use it. I learned how to brine a chicken and smoked it with apple wood and it was delicious! I thought I would try some baby back ribs and I smoked them with grape wood and I loved the flavor. However I was confused as to why some ribs were very tender and others were very dry and tough. Any ideas how I can do better? Thanks!