MaltLicker,
The gravity of my third runnings was actually approx 1.006 but it was also 140, with the adjustment it came to 1.022. I agree that this seems counterintuitive but my efficiency yesterday was also 84.9% so it seems like we got similar efficiencies with similar gravities for the final runnings which suggest that we aren't messed up. What are the odds that results that are so similar would both be that incorrect?
Having said that, if you think about it 85% efficiency is still leaving 15% of what they are able to get in the lab and then whatever percentage points they aren't able to get in the lab on top of that. The final gravity reading obviously doesn't take into account the man made standard based on lab results. So, if you think about it, even with 85% you are still leaving something greater than 15% of the potential sugars which is sort of a lot. Its a firm B in school, we aren't even getting an A on efficiency so maybe it's right?