eheethimportant question - should I remount my on3p k96s? between sizing down a boot and the fact my style used to be different to what it is now, they're mounted +2 of rec. would I notice enough of a difference bringing them back to rec (or even -1, if anyone rides theirs here) for it to be worth drilling another set of holes in my skis??
what is the boot sole length of the old boot and the new one? What bindings do you run?
If the model of the boot is the same, remember that you will only move forward half the lessened bsl of the smaller shell when you adjust the heels (if you have a binding with enough range to do that). 5mm (if it is the same shell down one mondo size) either way will usually not make or break a ski, but then again you are already at the forward limit of k96 at +2, so I would def consider mounting back.
I would go on the line if you evolved to more of a all mountain than a park skier. The ski works best there and going back will not make them more drivable nor dramatically increase their already good float considering their width, so you might as well go with recommended imho.