Not Locking Properly.
Try flicking the knife open then carefully closing and opening again. If this does not work after 5 tries please exchange the knife for a new one. Click To Exchange
Loose Clip/ Screws
Loosening of screws on any knife is expected. But with a wood frame knife it can happen faster than metal frame knives. Make sure to keep all screws tight. You can buy a screw driver kit with all the bits you need for $5. Click Here To Get a Screw Driver Kit