Unless the knife is really broken or worn out, you'll never see play when the blade is open and locked because the lockbar takes any slack. I've never tried moving the pivot laterally but that doesn't sound right. Do this instead: open the knife but hold the lockbar =open= (unlocked), then hold the blade near the tip and check for lateral movement. I'm guess you'll see some. You should be able to eliminate that with a very small adjustment on the pivot. If you do that, make =sure= you have and use the right tool so you don't damage the fastener or, worse, the titanium scale. Send it in to Spyderco if you're unsure about whether you can do that carefully and correctly.