Unfortunately the peq database has universal stats for most mobs based on level. I've noticed that melee class mobs have too low hp while caster mobs have too much hp. You could write an sql query to modify mob hp levels based on class, or you can manually change each mob to the correct value.
One place i know of for classic and kunark mob hp levels are here -
http://web.archive.org/web/200211292...cticiousname9/
i wish these values would make it into the peq database but it doesnt seem like it ever will
Threaded Mode
