Support BladeForums! Paid memberships don't see ads! Actually, I quite like the adjustability of the Umnumzaan (I haven’t played with it as much on my small Inkosi). I can set just the feel I like without too much trouble. Unlike my experience with other washer pivot knives, there is quite a range of adjustment & feel possible without inducing blade play. There’s none of the frustrating “micro-degree adjustment sweet spot” BS that I’ve had with Benchmade and Spyderco (not trying to throw down against other brands, but that’s been my honest experience). My guess is it has to do with the washer size, pivot thread spacing, and general tolerances. At the same time, I agree with the awesomeness of the 21’s bushing pivot. Crank it down and forget it. That said, some folks tweak/polish the washers of their 21’s to get the feel they want. (I wound up doing the same fixing a washer I pinched. ). If you’re into that, it’s honestly easier to adjust the pivot on an Inkosi/Zaan than it is doing figure-eights on 1000 grit sandpaper—and there’s no risk of screwing up tolerances. IMO the way CRK does it, both pivots are great and both have their advantages. Just don’t let experiences with adjusting pivots on other knives bias your opinion.