I have a question and a problem! I have 2 older adept builders that the skill levels should be master builders! The level is just about full and it still says adept builder!! Do they stop advancing in skill level after a certain age! I really need help on this one because I only need one more master builder to open the crate! I have tried to get the other "younger" adept builders to become master builders but there is nothing left to build! I keep them all fixing huts and nothing is changing! I'am so frustrated!! Please help !