Soo the certus quartz seed quests are supposed to unlock after I have the extreme infusion stone and a mechanist rep of 70, according to the FAQ. I've completed all but chapters 7, 8 and 10 and I only have a mechanist's rep of 67. None of the quests available give me any mechanist rep and supposedly I should have the required rep by now. Is this a bug or are there quests further down the genetics line (not looking forward to this ugh) that will give me mechanist rep?
I don't recall exactly, but it's possible there are quests that have mechanist rep that unlock after doing ones that don't have the rep. I vaguely remember Witchery quests having some here and there, or maybe in Thaumcraft, but it's been a long while and I could easily be wrong.