For anyone that embarks on this quest I have an update.
I killed about 50 of the regular mobs "Disgusting Parasite" with nothing but monster parts dropping. With the respawn rate being about 30 min if you dont kill the boss mob this took quite awile. Eventually I got some help to kill the boss mob"Balanoid Bileswarm" and it took about 25 kills to collect my 2 items. I understand that random is random but I am lead to belive that after 75 total "Disgusting Parasite" kills the item is not in there loot table.
Thanks again to Puppetsrus for the help.