I'm going to do 3 - 6.5lb butts on a large egg, and I am courious as to the use of mustard. Do I rub the butts with mustard and then Dizzy piggs rub and refridge over night? or rub with a little oil and then Dizzy piggs rub and no mustard. Which is better? Or any other idea's? How about brining? I'm just not sure about the mustard and how it will influence the final product. Thanks