I'm having a problem with one of my 'boss' monsters that I can't seem to fix. He spawns with only about 400 of his desired 2000 HP..... Than has to regenerate it to reach full.... Here is my DFN Code for it:
HPMAX only defines the maximum amount of hitpoints a character may have. If there is no HP tag to specifically set the HP of the character, the starting HP will be based on the character's STR attribute.
Try adding a line saying HP=2000 as well, see if that helps.