I started creating an American Wheat Ale based due to my recent score on Pilsen and White Wheat malt and TW's suggestion that I make an American Wheat Ale with it. I went and clipped a recipe from AHA and created a copy in the Recipe Editor. Here is the recipe. The original recipe claims 8.4 AA for the perle but the Perle I have from Hops Direct is 4.1. So the question is - Should I basically just double the 90 minute Perle addition to get the IBU's up to the ~13 the style wants? In general, how do you deal with hop additions when your source hops has a different AA value than suggested by the editor or when stealing a recipe?