[BigV]

That looks familiar. When I went to clean mine, I found the screen was indeed full of bleck. But even more importantly, one of the jet holes at the end of the rotating arm was plugged. Trouble was, a little piece of broken glass. It was big enough to obstruct most of the hole but small enough to fall back down into the hollow body of the sprayer arm. I could hear it rattling but I could never see it.

I finally got it by swinging the arm fast enough to fling the chunk to the end where I destroyed it with the pliers of my Leatherman. I crushed it up and made the tiny pieces small enough to pass through the hole.

The regular screen has three or four stainless steel screws. Obviously the racks come out, then the screws, then the screen. Totally worth it.