There's only a certain number of locations, I'm reading multiple threads using the 'live feed' link, so it just a question of checking Europa to see where they are.
it is north of the honor shrine in ilsh. The slimes are in the room with LL and PE spawn on level 2 (think it is called the arena, not sure though). Without stealth I'd stick with Petra's suggestion of entering through the third levelwhere exactly is this sorcerers dungeon again???