I was 9 points short of my OG in the fermentor even though my pre-boil SG was spot on (after diluting to bring OG down due to an overly efficient mash and drawing excess wort off to hit my pre-boil volume). My post boil volume was spot on too. My trub loss in kettle post boil was 0.5 gallons less than expected which meant I left a lot of beer behind relative to my 2.6G target volume into fermentor. This of course negatively impacted my brewhouse efficiency. When taking my post boil gravity reading I ensured the wort was well stirred and I took several reading with my calibrated refractometer. All readings were the same. My target in the recipe editor was set to Kettle. Here were my efficiencies for this brew session: Conversion: 87% Pre-boil: 71% Ending Kettle: 61% Brew House: 36% :-(. Not sure what I should be tweaking in my equipment profile and recipes to prevent coming so short on my OG when doing DIPAs while over achieving on mash efficiencies and pre boil eff. Is it possible that Brewsfriend doesn't account for the sugars absorbed by the hops when brewing a heavily hopped beer? I did squeeze my hop bags. This is really getting frustrating.