Does a 20+% evaporation rate seem like a lot? I downloaded Beersmith and am feeding default info into it. I brewed today and started with 8 gallons in the kettle and ended up with 5.5 gallons. I have a 10 gal SS pot and a SQ14 burner (first time I used this today). I have always had to add water back to the fermenter to hit my target OG and volumes. I'm working on trying to avoid that. But I don't know if I'll be able to start with that much volume in my kettle.