I love BeerSmith, but I have issues with the boil off/preboil volume estimator. I boil off roughly 1 gallon/hour, but when I inputted a recipe for 11 gallons and a 90 minute boil, the estimated pre-boil volume was 14.2 gallons. Am I missing something here? Shouldn't the pre-boil volume be 12.5 gallons? This screws up my pre-boil gravity as well, obviously. Anyone know what I could be doing wrong?