Crawdaddy79;
The XVI32 hex editor defaults to 17 columns (that can be changed in the options), rather than the standard 16 (which is what I assumed for my instructions). In that case the difficulty value would be two rows below the 'e' (so in XVI32 you would move one byte left for each row down to compensate for the extra byte per row compared to other hex editors).
Anyway, glad you got it working.


Undesirable;
At least for the start of the game, opponents in hardcore get fairly modest bonuses, if at all (less than 10% extra health, mana and stats if there was any difference; only 1 of the resistance stats I looked at changed, and that was only by 1 point). It seems the doubling up of some opponents would prove more trouble than specific creatures being a little bit tougher. Playing again I would go with hardcore difficulty, but I don't think I would have the patience to reload at each level-up. On tactical with a warrior / archer combination I pretty much always had spare skill points (though I never got around to trying out traps or playing with many spells...).