Haven't found any way to gain skill past 95. Gm box stops at 95, all dungeon chests unlock immediately for no gain. I'm assuming you have to get to 100 off level 5+ treasure maps. We need a better way to GM lockpicking. You put in level 5 dungeon chests on the original server, either that, or a purchasable token to gain the last 5 points or something. This is the only skill I know of that is basically blocked from GMing in a reasonable way.