How fast are you going when you feel like you're going to slide out?
I've been on the NS for a few days now and I find that it holds an edge pretty well on hardpack (dust on crust) but at higher speeds it tends to let go. I've been attributing this to the light full-length detune I gave it, but now I'm thinking it may just be the limitations of the CRC profile.
No real idea how fast... but it is def those moments where you hit a patch that's been scraped out and you aren't expecting it. Nothing to push against if you know what i mean. I did clean up my edges the other day, but they are by no means sharp... not detuned though.
I suspect it's my riding technique too, i think i throw my body weight out away from my edges a bit too much perhaps.
I think you've gotta know how to pressure the cambers at the tip and tail and really work
them to your advantage. Push your knees outwards to help engage them, and also use good fore-aft movements through turns. ie: get forward initiating turn, move aft/back towards turn completion to really drive your edge into the snow so you don't skid (much).
^ I think I just quoted snowolf right there. Dunno where that thread is though
Credit where credit is due