I am currently smoking 2 racks of BB and two spares. I just wrapped the BBs in foil after their first two hours (going to try the 2-2-1). Do I need to continue to baste these while they are foiled? All I have been doing is opening the lid every 30-40mins and giving the racks a quick spray of apple juice. I will wrap the spare racks in another hour (per the 3-2-1). Once foiled, do all four racks get the same treatement? Also, do I flip these at any time? I have found differing opinions, but so far, they have been left bone down.