You know yourself better than anyone RG, and no one should doubt you, but why would you ski at a lower than recommended setting?
Do you fall that much that you need to worry if your skis will come off? Your chances of falling in a manner that will cause knee injury are so slim. You are actually putting yourself at more of a risk skiing at a lower setting and having a ski come off when there would be no reason for it.
Ten years of Patrol and of all the injuries I attended to, the least were knee injuries. And, of those knee injuries, most of them were by beginner and lower intermediate abilities, with bindings set where the should be or from bindings that were obsolete and out dated or didn't work properly.
(borrowed skis, hand me downs, used purchases)
I had a couple that come to mind actually tear knees up falling while standing in lift line, slow backward falls, the classic injury fall. Most slow twisting backward falls occur on green and blue slopes or cat tracks where people are either aren't concentrating or are beginners.
It's also a fact that good skiers like yourself with good control and technique will more than likely never put the ski into a position where it will release. That day will come though.Skiing in deep powder in the trees you'll catch a tip on a submerged stump or limb or rock and most times when you could have continued on and recover your ski will come off and you could do a header into a tree, or tree well or over a drop. Then you'll be thinking, if my bindings had been set where they should have been, this might not have happened. I hope it never does as I wouldn't wish bad luck on anyone let alone someone I respect as being one of the top instructors in Colorado.
As far as Marker goes. I skied Marker for many years. My issue with Marker was a bad fall about six years ago, maybe five. I was having lunch when I got a call on my radio about an injury on a black trailhere where I ski. I ran out and clicked into my skis and hit the lift. While heading down the slpe at a real good clip, my right ski clicked and released.I tried to ski to a stop on the left ski but as I tried to stop took a rather nasty plant directly on my right shoulder. Now there was two rescue calls. I knew I was hurt badly as my whole right arm was numb and tingley. I got up and put my ski back on and continued down to the accident scene. I quickly acessed the injury and called for backup and explained that I was also injured and was of no help to the girl. To make a long story short, I toreall the major ligaments and muscle groups in my right shoulder. Had major surgery four weeks later, cost me five months of work.
Here's the question. Was it pre-release? Did I not clean the snow off my boot before I clicked in? Did I not here the snap crisply when I stepped into my skis? Why did it just release? I didn't hit anything on or in the snow. It was a nice groom day. I surely didn't cross my tips as I don't ski with my boots glued together. Could have been anyone of those factors. It came down to ice build up under my boot or pre-release. I blame the Markers. Have used Rossi's and Looks ever since. Haven't fallen since and haven't had a ski come off since. By the way, they were at recommended din setting of 7.5.
This din thing is all up to the individual. I'm not an instructor and don't recommend anyone turn up their din just because I do. I just think it isn't harmful to do it and in certain circumstances, makes sense.
And don't use Markers