i have a pretty tasty american wheat beer that i just tapped but there are a few things i'd like to change. i'd like to lighten the color and drop the OG a bit. i moved some of the grain ratios around and decreased the total but that only got me so far with color. i usually do 90m boils, so i think that the best way to decrease color is to cut the boil down to 45m to avoid caramelization and reduce maillard reactions. my problem is i can't figure out how to adjust my grain weight / efficiency to make it all work. the only way i can cut my boil time in half and hit a specific OG at the same volume as before is to decrease my boil volume and thus my efficiency. i know what boil volume i need, but changing that and boil time doesn't do anything to efficiency or grain weight. maybe i've been tasting to long tonight, but am i missing something obvious? using beersmith.