I had a Kershaw TiZDP mini cyclone that had this problem. It always bugged me. Technically it probably isn't an issue as far as the lock functioning safely. But I'd imagine that even minimal wear to the lockfaces would result in your lockup eroding to 100%. You pushing it over probably isn't very good for it.
J. davis made a point that this is common with steel inserts, but I disagree. It all comes down to the lock geometry. The lock faces are moving parallel to each other. Ideally I'd say that isn't desirable. If they move parallel, or nearly parallel, lockbar pressure will not increase with respect to lockbar travel. On my SNG, for example, you'd have to remove a ton of material from either the lockbar lockface or the blade lockface in order for the lockbar to move any further. That translates to a lock that essentially lasts forever. However, sometimes if the contact surface area is too small the pressure is enough to cause galling; sticky lock. A well designed frame lock will be stick-free and shouldn't wear over after the break in, IMO. My Domino has a steel insert and it wont move at all. It has remained at 50% since day one, stick free.
If this happened to mine I'd send it in.
Not a functional issue, but when you pay top dollar you're entitled to fixate on all the little details you want. Not all knives that roll off the production line are made equal. It's called tolerances.
