[Debaser]

I don't know greyhat, that's a tough question considering you've finished all the rest of ToB.

maybe try the Marching Mountains, I'm fairly certain fire giants may respawn randomly around there...it sucks that you can't go back to the SoA areas, then you'd have a much better chance of leveling them up quicker.

All i can say is look for ToB areas where monsters (preferably hard and high XP ones) lurk (and respawn)...try resting in dangerous areas a lot and what not. that's the best advice i can give...