How are you BIAB people measuring "conversion" versus "pre-boil" gravity for BIAB? I've been using BF for a couple of years and have always pulled the bag, squeeze, then enter the same number for my conversion and pre-boil gravity. A "eureka" moment caused me to ponder the fact that I've been doing it wrong this whole time. I NOW assume that, for conversion efficiency, I should take a reading at the end of the mash before I take the bag out, then another reading after I squeeze for pre-boil. Am I correct or no?