Given your claim of producing a collection of 2000^5000 items, which dwarfs the number of elementary particles in our universe, your methodology is more than a little suspect.
I think one of the primary things holding me back at the moment is not adequately testing things, It seems both my test and one of my functions I didn't test at all. I'll make this a priority, also it seems my day off turned into two, I'll focus up tommorrow.