Yikes! How many pieces do you have left over?? I thought it was completely back together besides a couple of clips?
I would need to see a pic of what you're trying to place. I have parts charts, and a poor FW that I can take apart, but I'd be guessing from here if I advised you as to which washer went where. If there's a part number on it too, I can look that up to figure out what it is and where it belongs.
I would definitely say don't leave any parts off. These machines were built when they didn't want to scrimp on the quality of the parts, but there weren't any extra parts put in for the heck of it either....