I did my first AG yesterday and followed the recipe for mash and sparge volumes. There was still some liquid left in the mash when I reached the 6.5 gallons the recipe called for so I stopped collecting any more and just boiled what I had. If I had collected the rest, should I have just boiled longer to get to 5.5 gallons or will the longer boil cause off flavors? I'm trying to figure out ways to improve my efficiency and I figured this is probably one of the areas I can improve. I ended up around 55% so there is clearly room for improvement.