Have not had this issue in a while so im a little scared. I brewed a milk stout Saturday and pitched at 75, withing a few hours it was comfortably below 68 (which I my target high with S-04) Ive kept it in the low 60's no higher than 64 since then. Today I actually had to work today (teacher work day) so I didnt get o change ice bottles. It was 70-71 this evening about 8pm. My wife did change the bottle at 2 and she said it was still cold just not frozen. So my guess no more than 3-4 hours at 70-71. Am I screwed? It has been fermenting like a champ since early Sunday.