open, and extract Data1.pak, inside are the maps for the game. Inside those folders are the loot tables, and the probability percentages of the items chance of dropping in the area. 'prob = 0.3' for example. They seem random, based on the percentage that they will drop. But some have higher chance rate than others. Not sure its a good idea to make them all higher chance.
Maybe if you after certain items, you could temporarily change the prob of that item to say 0.99 (99%) then change it back after you got it. Havnt tested it yet. I altered my skill of chance of upgraded items dropping to 99% in my skills, which is good enough. I might play more with it on 2nd play thru.
My fav alteratino to skills, is the chance of boomerang abiltiy. Now, everytime i throw a weapon, it always auto returns to me
[Edited by rcboothman, 9/10/2011 2:02:34 AM]