moving your stance from 21.5 to 23 is a pretty large change I would say too much, for sure. If you want to tweak the stance or experiment, do it in 1/2" increments if possible.
There are definitely days when you just don't "have it". Usually no big deal.
Conditions at Mt. Holly last night were pretty nice, it snowed most of the evening from when I got there around 5 until when I left around 10.
A bit of snow makes everything much nicer. Ended up doing today at Alpine Valley again and a few inches of soft on top of their pack was nice. Started getting crowded in the mid-afternoon but still a real good day and nice weather.