Got to unlock a house a couple days ago. Tried picking the F51N for awhile, and finally gave up. There was a BC-160 on the door from the garage out, so I took it apart and cut a key to code. You'd think the folks at Schlage were messing with me. Code turned out to be 36893. How's about that for miserable?
(The key to the 160 did work the knob, and we got the customer in.)