I brewed a parti-gyle 3 weeks ago and ended up way high on the 1st beer's gravity. I was shooting for 1.090, but hit 1.141 (5 gallon batch). I was fine on the second beer at 1.045 (10 gallons).
Anyway, the big beer's been fermenting for 3 weeks and is currently at 1.069. I'm concerned that...