Does anyone know the arrangement of the baffles inside the fuel tank of a 122 wagon?

I pulled the tank, and it sounds like there is 10 lbs of rust and dirt in there. I've shaken out about 5 lbs of it, but cannot get the rest out, as the baffles keep it from falling to the filler neck. No matter how I turn the tank, some of that junk just won't move to any opening.

So how are the baffles arranged inside? Fore and aft, or side to side, or both?Are there holes in the baffles that allow the fuel to flow fron section to section, or are there only gaps at the top and/or bottom? Any ideas what kind of jiggy-dance it takes to get the junk to the filler neck so I can get it out before I seal the tank?

Thanks!