What part of the software controls by how many degrees your wort will increase in a set period of time.What ever recipe I seem to dial in, the difference between the pre-boil gravity and the post boil gravity are always miles off. I did a Heady Topper clone last night and I wanted 1.047° per boil, I actually got 1.050° so I was a happy chap. 90 minute boil with two really good powerful elements and an average of 8 lts an hour boil off got me to 1.065° when the recipe editor said I should be up at 1.077°, that's a whopping 13° out! Maybe I have missed something here or got the figures dialed in wrong but if someone can point me in the right direction I would be grateful. I have reduced my efficiency down to 70% due to this inaccuracy but I must be able to sort this out somehow? Thanks in advance!