Overall it's a rather "light duty" knife as it is so even if it had a little rock it probably wouldn't bother me all that much but I detect none so far.Even if you put a lot of force on the spine when you’re wiggling? The one i handled was subtle and took me a few days to notice it happening. You don’t really feel it if you’re being gentle about your play check.
Maybe after it gets broken in?
Has me curious anyway.
If it does develop a little rock (and if it bugs me) I'll just give it away to a friend or coworker that wouldn't ever be aware that there is even such a thing as "lock rock". They'd be happy as a clam.