I finally got an A in ZeroEmpires' Fast Castle Tutorial.....

....by skipping researching loom and just straight up cancelling the second villager created in the feudral age in order to click up to castle age.

I have no idea how you would get an A*. There must be something that if you delay nearer the start, has the effect of magnifying to half a minute lost at the end. But I do not understand what this could be as I am always keeping villagers queued (maybe a second or two lost in the luring the boar back part).

Im guessing a few of you have been through the same, what am I missing?!