Since Bin 3 still had some leaves in it I moved them to bin 4 sifting out any finished leaf mold as I went. Since Bin 2 was a mix of finished compost and things that hadn't decomposed, I sifted through it. All finished compost went into Bin 3. All decomposed items went into the overflowing bin 1. I did part of that yesterday and part today. But finally bin 2 was empty.