I currently have the Winter Warmer sitting in the primary, and I pitched the Wyeast 1728 on Sept. 27th. I took an OG reading of 1071 as well. The problem I have is that the yeast did not start fermenting the beer. Everything is settled in the primary with no bubbling or anything. I called NB and they shipped me another yeast packet, which I currently have sitting in the 1000 mL yeast starter flask propagating wonderfully. My question is do I aerate the wort in the primary again before I pitch the yeast? Or is this unnecessary? Thanks for the help fellow brewers.