I have a touch of horizontal play on my mini, absolutely no vertical. I can tighten the pivot, but unless the adjustments needed are micro, the trade off between the increase in opening resistance vs. less blade play is quite intense.
I dont know much about the pivot mechanism etc but it seems to have some sort of cam / elliptical action - which when tightened all the way reduces horizontal play to nearly nothing... and makes opening very stiff - but when loosened 1/4 turn loosens the opening action dramatically, but allows significant blade play to creep in.
Maybe Im just turning it all wrong..
Love the knife to bits though. Forgive me for, at this stage, kind of hoping they dont have a Manix II.. I seems to have bought 6 spydies in as many months and am panicked at this phenomenon right now... I dont want to imagine how many more I might be likely to buy!