hallo, I was rreading through the DMGs, and I'm faced with a difficult conundrum. both books have tables listing skill DC's by level, but seem to vary by 9 to ten. the Dungeon master's screen agrees with the DMG 1, but the ones listed there seem too high, and those listed in the DMG 2 seem too low. what are the DCs that other people have found effective? has official policy changed?