I have 3-31’s and all have problems, 1- large KnifeArt DP, magnacut, 1-small KnifeArt DP, S45VN, and 1-small Micarta inlay DP S45VN. While none have any lock rock that I can detect, all 3 exhibit some slight lateral blade play, and the small inlay has an off center blade. All knives were bought here on the board in like new or excellent condition. All knives were made in ‘22, ‘23, ‘24.
I am disappointed, as I love CRK knives, but as for the 31 I am not a fan. If I could do over 21’s and Inkosis’s would be my choice.
***Had to edit my post***I tore both my large and small KnifeArt 31’s down, degreased, polished the washers, re-greased and re-assembled and now both knives no longer have any play, vertically or laterally. I’m very happy with the results. My opinion has now changed on the 31’s, love ‘em. They just needed some tlc. The small Micarta however does still have issues and will eventually have to go to the spa. It has been going to work with me for the past year so it obviously doesn’t bother me.
My large 31 is “the knife” right now and goes in my pocket every day after work.