I concluded the boil off process. I started with 3 gallons water and boiled it for 15 minutes. At end of boil, I shut heat off and the volume in kettle was exactly 3 gallons. I then cooled the water and the volume dropped to 2.75 gallons So I lost .25 gallons due to the boil off in the span of 15 minutes. So if I multiply .25 x 4 which would make it a 60 minute boil, I would have lost exactly 1 gallon. My setting in the equipment profile is set to .79 gallons. I will change that to 1 gallon of boil off in a hour. That may help some with my volume and gravity.