Hello,I just received a new Spyderco Stretch FRN Knife C90PBK that a bought online.The problem is it's not deploying properly.The blade feels stiff and doesn't deploy with the flick of the thumb,it just comes out halfway; in fact it takes several flicks of the wrist to finally get it deployed in the lock position.I've seen several videos of the knife and reviews and thay say it has lighting fast deployment.My question is there something I can do?or send it back?Thanks