On the right side, remove this screw in the front (#8-36, 5/8"), and the screw that looks like a shaft in the middle.

These screws may have split washers on them. I suspect they were all supposed to have one, but only half of the screws in this step had them.

That shaft-like screw is essentially a #8-36, 5/8" screw attached to a 1" head, 7/32" in diameter.

On the left side, remove this screw in the front (#8-36, 5/8") and the screw that looks like a shaft in the middle. This one is also #8-36, 5/8" but with a 1-1/2" x 7/32" head.

All these go into bag 3.