[Captain Kwok]

I think I initially changed it to check if there was something about the formula causing the maintenance reduction not to be applied long ago in beta (it turned out that cultural achievements bonuses at that time were not being applied) but never switched it back.

I thought at some point it was taken right off maintenance, ie from 25 to 15 for 10% reduction. Anyway, I probably need to revise a few of those cultural achievement bonuses since I haven't touched them since v0.70ish?