There's no need for extensions if the skid is set up properly. What your tryin to refer to is "caming over". Extensions maybe a band aid, but its not a solution. If your rear shock is too loose it will cam over, if the rebound spring is too soft it cams over, if the rear lower shock is to far back it will cam over. They all work together in a sense, baby steps on adjusting to get it perfect.
If you want transfer, it's the wrong skid for you plain and simple. M-10's are designed for minimal transfer, you can adjust mounting position, have weak shock, cut transfer blocks, loosen limiters etc etc, it will add a small degree of transfer compaired to what it was before, but in comparison to another skid, they virtually dont have transfer. Hence why we love them for high HP sleds.
That skid is mounted for a max ski lift of 5 to 6 inch's on avg conditions, soft snow trenching down may give the feeling of "ski lift" or transfer, but its not.
The front fox float in that skid rides good at 80 to 96 lbs. If your climbing something steep and want the ski's planted (which you dont by reading this post) let the air down to 10-20 lbs, it will be glued to the snow. If you wanna boon all day in the pow, air it to 130 lbs.
On your resivoir, turn up the rebound, on rear lower shock axle adjuster go to the middle position on the adjustmet bars (forward) or more, cut your transfer blocks by an 1/8'' or 1/4" at most and try that.