I'm wanting to do a Three Floyds Dreadnaught clone of sorts, and found a recipe from BYO here
Anyways, 159 is quite a high mash temp. As such, I'm having trouble getting BeerSmith to attenuate this anywhere near what the recipe calls for (1.020).
BS says it'll stop @ 1.030 @ 159F mash, and 1.027 @ 156F mash. Any ideas what's the deal here, and how to fix this issue? Is this going to carry over into the actual brew, or is it a software issue?