That's a very nice looking beer, Ken. Lately, I've been mashing at a room temp pH of 5.5 or so, and for light styles adding 1-2mL of lactic acid near the end of the boil. I'm curious to see what differences, if any, I get on my beers. Also, going forward I don't think I'll use Brewtan B anymore either as I have all stainless contact. For what it's worth, I hadn't used it in the boil for the last few years. Just never thought it did anything beneficial.