Brewed an IPA this weekend on my Robobrew, I took a pre-boil reading (after stirring the wort and adjustment for temperature) with a hydrometer and it was spot on what beersmith said I should have gotten. However after my 60 minute boil the OG was 10 points off, and I got exactly 5.5 gallons into my fermenter with minimal wort left in the kettle. Would think that boiling a wort with a specific pre-boil gravity would result in close to what beersmith would have said. My only though is that maybe the wort in the fermenter wasn't completely mixed as the sample I drew off the bottom was lower and almost the same as pre-boil and the sample i drew off the top was the 1.060 below,