Mine arrived where the blade was a bit tight. What i mean is that if i let the spring open the blade sometimes it would not go all the way to lock. If i flicked my wrist a bit then it would lock every single time. If i held the blade and slowly let the blade open i could feel that it was really tight as it reached the stop pin. I loosened one of the stop pin screws by about a 1/4 of a turn and that did the trick. Works fine now. Hopefully that minor adjustment doesn't blow my warranty.
JD
JD