I currently own 41 compression locks...PM1, PM2, Para 3 G10 and LW, Shaman, Lil Native, Yojimbo, Yojumbo and Gunting. Of those, only one of the PM2s had actual lock stick. The problem is caused by a slight lockbar overpressure that drives the locking tab too far across the horizontal lock face, pinching it between the lock face and the stop pin. If you're just experiencing a slight gritty feeling on a new knife, that's not really lock stick, and it should break in fairly quickly. Real lock stick is much different, and will typically get worse instead of better until the problem is resolved. It may get so bad that you need a pair of pliers to disengage the lock.
If you're comfortable working on Spydercos, you can correct the problem at home. The lockbar needs to be bent outward *extremely slightly* to reduce the locking force. The bending procedure should be done with a vise, so you do not introduce a second bend into the lockbar. If you get it right, the lock stick will completely vanish, and you won't have any lock rock. Barring that, you can take your chances with Spyderco's warranty department. They may send you a new knife, work on your old knife, or send it back with a note informing you that it meets QC standards. If you accidentally bought a counterfeit, they will throw your knife in the garbage.
