Tachead, would you be willing to bet you can flip your xm open 200 times in a row, using the same finger, without a single failure to lock, without your finger bleeding from having to preload so much? And not using your wrist? I've had two xm-18 3.5" slicers and neither one of them had a detent. I had to use wrist action to get them to open and lock. I think I could do it easily with a 0392bwbrz.
I deleted my comment. The XM was just a suggestion and I don't want to derail any further.