RE: Knight and Hale Ol' Yeller Slate Call
The old Ol' Yeller was an excellent call, I loved it. Somehow the slate cracked on it and I decided to pick up a new one this spring. It sounds entirely different from my original call. It sounds horrible, nothing like any turkey I've ever heard. It has a tendancy to sqweek rather than make any sound remotely close to a turkey.
I'd take a look at a different call if I were you.