I use Beersmith to build all of my recipes, of course and I just can't seem to get even decent efficiency out of my system. I use a tiered system with a keg HLT, a 48 qt ice chest mash tun and a 7 gallon stainless brew kettle. My temps are generally right on target. I did a triple decoction Dunkel yesterday and got about 55%. It is really frustrating. Any ideas?