Glad that it all worked out for you. The factory gaskets that you need is 3EG-14613-00-00. You will need two of them. I get most of my stock parts from South Seattle Sports Plaza in Federal Way. You can order online and have them shipped to you. They are the cheapest around that I found and I have been doing business with them since the early '80s, so they have been around for a while.
PS. Lake Tapps (the town) is one town north of Bonney Lake. The actual lake runs from Auburn at the north to Bonney Lake at the south. I am only a few blocks from the boat launch at Alan York park. Always nice to here from other warrior owners from western Washington.