I prefer to boil all 5 gallons (I actually start with 5.75 gallons for boil off) when doing a kit. This causes my beer to be a little over hopped. I decided to try to do something about this. I entered the recipe from the kit I was going to make into BeerSmith. When I switched the water boil amount from 2.5g to 5.75 the projected IBU’s went off the chart. To get the IBU’s close to the same I have to cut the hops in half. Is BeerSmith wrong on this? How much should I be using? Should I just use all the hop amounts on the recipes and ignore the fact that I am using more water?