I have been using this cleaner for a couple of months. I generally run my brass through several cycles just because I can. The other day I noticed something. The brass in the center of the basket was remarkably cleaner then other brass. I started to pay attention and took some photos and sure enough the center brass is always cleaner. The moral of the story is that if you want your brass really clean from this unit put it right in the center. This limits the amount of brass you can process at one time to about 25 cases.