i sorta managed something out. i tried the same thing with many different monsters until i found one that wouldnt drop any zen/random poop so i copied that monsters statistics from monster.txt into another monster and tried and it worked.
then i increased the drop rate as you said, not too much cause it would cause only the first item in the list to drop, and now its sorta acceptable. no zen comes out and rarely the monsters will drop nothing. its not perfect but i might continue trying, thanks
edit: sorry ive got a little question more, on these files i can change the mana shield formula from the common.ini file, and in terms of gameplay it works except for the text on the skill that remains outdated, it displays a manashield % that isnt exact, where would i need to look for this?