I have just brewed a couple batches with the new version of BeerSmith and I am trying to tweak â€œmy equipmentâ€ to get the best results. I have a homemade brew tree with 3 converted kegs. So far my final volume has been off in the fermenter, and I have missed my final gravities (low side). I plan to fix this by changing my efficiency setting to 70 % and adding 2 more lbs. of base malt. What do you use for the mash tun dead space? I think Iâ€™m about 1.5 gal in the tun and about 1-2 gal. for trub / hops in the boil kettle. I can then change the fields for the best results. Suggestions please?