I've felt all age that my gains have been strangely low on a regular basis, and this time round I actually bothered to do the math on what my gains were. Target no GS, no GB protection, within NW range (both province and KD). Calculated 12% base gains for land -> 90% of this value was exactly what I got, as though Avian -10% gains was still present from 2 ages ago. Obviously I need a bigger sample size to test the theory, though. Could anyone else weigh in?