Speeding Tickets: Received Discovery for Speeding Ticket; Officer's Statement is Only Incorrect Item

My question involves a traffic ticket from the state of: Washington

In the irony of all ironies, one day back in September last year I left work early to go fight a parking ticket (which I won), and as I was accelerating to get on the highway, I received a speeding ticket.

I submitted discovery:

https://i.imgur.com/fDUWGqc.jpg

And received the following back:

https://i.imgur.com/jrdamKK.jpg
https://i.imgur.com/IRYA2JS.jpg
https://i.imgur.com/91wuwX1.jpg
https://i.imgur.com/AVyhNl8.jpg
https://i.imgur.com/nmhWXpO.jpg

The only thing I can say is incorrect is that I never admitted to knowing the speed limit as he claims on the 4th page. But I'm guessing that wouldn't help me in any way.

Is there anything else in here that I can use to get out of this ticket? I have a clean record and I'd like to preserve it without resorting to a deferral if possible.

Speeding Tickets: Received Discovery for Speeding Ticket; Officer's Statement is Only Incorrect Item