Thanks for getting back to me on that
I don’t own that many back lock knives so I was just asking out of curiosity. It’s not stopped me buying more of them (a Tasman Salt arrived yesterday) as they’re hardly falling to bits and the benefits (staying closed, simplicity of use, etc) outweigh there being a little bit of vertical play for me.
I’ve owned a couple of Cold Steel knives with Triad locks and while the lock itself was great, I was somewhat less thrilled with the rest of the package - I had a clip and scales fall off due to shredded screw threads (overtightened from factory) and the replacement came with a warped blade. Both had to be sent back Shame as I liked the design (4 inch S35VN Tanto).
I have a real hankering to try a Spyderco Power lock, but functionally I don’t find a bit of blade play causes me the slightest bit of inconvenience in use.