I'm still dialing in my all-grain process so my efficiency has varied quite a bit. I'd like to use beeralchemy to adjust my gravity pre-boil so I end up hitting my target OG post-boil. I want to see how much malt extract I need to have if I am under or how much water to add if I'm over, in order to hit the target pre-boil gravity. Does beeralchemy do this, and if it does, could someone tell me how? Thanks!