Mine locks up solid as well. I really like how it feels like they smoothed the edge of the hole on this one. My Manix 2 is pretty sharp around the hole, feeling this one made me bust out the sand paper to the Manix and smooth that hole. This knife is definitely growing on me. I am not sure how I feel about the compression lock yet, I kind of wish it was reversed so that I could hit it with my thumb to close it, although I would probably do that when I don't want to...
I do really like the full flat grind. This thing eats paper and cardboard. It almost feels like it sucks it into the blade. It has made me consider getting my Manix 2 reground...