Uh… am I the only one who thins TBII with water? I’ve gone as thin as 2 parts water to 1 part glue.
This page says you should only add 5% water at a time, then mix thoroughly, but I just dump it together and mix it up (the magnetic stirrer makes short work of mixing it). And if it gets too thick in the GlüBot, I just add a little water, shake it up good, and set it back in the bench for mañana. Easy-peasy.