So, I am brewing an American IPA tomorrow, but when I put the ingredients in my iBrewmaster the numbers don't match up at all. The IBUs are supposed to be 65 and they are coming out close to 90, and the estimated OG is pretty low as well unless I bump up my efficiency to 75, instead of their 70 that is suggested. Is this normal, and I should just roll with it? My profile is correct and ibrewmaster has never steered me wrong in the past lol I am just afraid of the beer becoming unbalanced.
Here is the recipe http://www.homebrewtalk.com/f69/my-2-time-gold-winning-american-ipa-81478/