You can't just slap washers on the knife and expect the same factory results. Each Sebenza is hand fit, which involves the washers, bushing, and also the blade if I recall correctly.
And on top of that, the washers are basically free. If you want an extra pair I think they charge you a buck fifty, which is insanely cheap. I recommend paying the extra 1.50 to have an extra fit pair for each knife. It will eliminate the need to send it in when you pinch a washer because you followed a YouTube video instead of the recommended way of assembly. I've done it. It happens. You learn and move on.
I believe the registered user part is important as well. Registered user is the most basic form of membership. Camillus72 you are not a RU, you are a Gold Member. Big difference. Any Tom, Dick, or Harry can register and troll the pages with derogatory comments, so yeah I completely understand the attention the OP got for his status.
In the end, you can order washers many places. Use Google, it can be your friend. Just know they will not work properly in your Sebenza, which would probably lead the OP to then complain that his Sebenza is "overpriced" because it isn't smooth or won't hold center properly and then he will have to mail it in to have it serviced which is the initial wait he hated so much to begin with.