Most of what I've read about rubbing a butt has said to do so 24hrs. before you smoke it. Is there any harm in letting it sit with the rub on longer? I'm doing a cook on Saturday. I plan on having the butts on the smoker around 5 am-ish. I want to prep them a head of time, but I will be at work all day tomorrow so my choices are to rub them tonight and let them sit until Saturday or Rub them as soon as I get home on Friday. Opinions? Ideas? Thanks all- J- P.S. Went to Hy-vee and got in on the $.99/lb deal...We'll be eatin' butts 'till the cows come home!