This is a 2.75 gal BIAB batch, I'm trying to brew in a 5 gal kettle. Just brought 3 gallons of strike water up to 160 and added my grain, it is really thick but I can't fit anymore water in that kettle with this much grain. I stirred as best I could but my temp dropped way down to around 140 or so. I termed on the store and stirred but though the bottom heats up to mash temp I can't get the temp to evenly distribute because the mash is so thick. I've got another kettle with 2 gallons of spare water heating but I can't use it to warm up the mash till I take the grain out. Any ideas?