Welcome to the new and improved Proflex / K2 Tech Forum!
I happened to be riding my road bike on Vashon Island, former home of K2 Bike HQ, and happened to notice an old EVO frame in the weeds. Low-and-behold - it had the adapter I needed, and it was in fine shape.
I ride trails in a 700 acre park just south of Vashon at night. Nobody to complain then and the gates are closed. Used to ride Victor Falls a lot but that has been a while.