If the nuts are on tight, then there's minimal friction in the first place. No need for washers, they're just an extra step here, and less than a couple bucks of extra money.
Sure, advice is fine, but OP already explained why they weren't used, so I don't see why two more posts about it is warranted. And this post is a guide, not a request for critique, so there's that. AND this forum is not strictly for advice and help. There are boards for that. It's also for discussion and just general chat in the appropriate areas. Not all posts are asking for help and not all need to be given advice.