when you have the blade locked in the open position and you press it against a hard object (cutting board) is it normal to have a little play in the blade ? it's minnimal but there is justed a bit before it stops. i would guess this is normal after the knife has broken in ?
If it's a lockback knife then a mm or so of play is normal. This is a feature of ALL lockbacks and is caused by the built in tolerance needed for the locking bar to clear the notch in the blade tang for when it is disengaged.