Mine came yesterday, 0604. Action was tight and grainy, so I took it apart, bent the liner lock a little, cleaned the ball bearings and regreased it.
Had to carve a bit of wood to install a custom deep carry clip from Pop's Custom Clips. About an hour's worth of rework total, and this thing is now, in my opinion, pretty much perfect. Didn't come flawless, but well worth it, especially after tweaking. The finish came superb out of the box.