[ram5ey]

I was wondering what kind of efficiencies you were currently getting, although in my world I'm much more into consistency. The biggest thing thing that upped my biab efficiency what milling my own grain. My process is a little different because I mash in the bag in a 10gal  cooler then transfer to kettle (I found adjusting temp on stovetop to be very difficult). I usually squeeze the bag and have never had a tannin issue because the tannins would be coming from higher ph sparge water (I don't dunk sparge) or possible stringency from getting grain in the boil, but I doubt that either. I did increase my efficiency a lot by pouring 170F water through the bag at the end, but it was inconsistent and with my normal method of just squeezing I get 74% every time. If you are getting low efficiencies (in the 65% range) I would look to crush (mine is very fine) and mash PH.