Last night I did the first chunk of the Tomb of Horrors 3.5 adaptation. I was glad that the traps had save and disable DCs, to make the Tomb more playable and a little less arbitrary. But I wasn't really prepared for the rogue to just take 20 on all the search checks! This means they automatically find virtually all the traps, which takes a bit out of the Horrors. In an adventure I wrote there would be things preventing spending 8 hours on searching a hallway (patrols, time pressure, etc), but the Tomb has none of these, and I don't particularly want to add an arbitrary wandering monster table. I suppose this is partially a general problem with traps and taking 20. Any thoughts?