I began this pile in Oct., where it heated up nicely maintaining over 120 degrees F for nine days. The temp peaked at 138! This March I turned and added kitchen veggie scraps, coffee grounds, banana skins, etc.. It warmed up to a peak of 80 degrees, and is now at 60. I used straw primarily for my carbon and I still have mostly straw, although it has broken down significantly. Should I add more nitrogen on my next turn?