I ski on Fischer X120's. Overall the boot fits the shape of my foot well. The shell fit is close (I have a fairly wide for-foot). I never really liked the liners all that much being used to the Intuition liners in my Full Tilts, but mostly I found them very cold in comparison and not a great heel pocket. More on this later.
I read Marshall Olson's article on Blister about heat moulding his Technica Cochise boots as well as the articles he referred to on the Zip Fit site. It all sounded pretty interesting. So I discussed all of this with my local ski shop, who is a good friend, so I wasn't too concerned about living with a disaster. After much discussion we decided if we were going to do this let's go ALL the way. We decided to heat the shells in the Fischer oven and use the Vacuum machine and cold packs.
Since I liked my Intuition liners, we used them instead of the stock liner.
I needed a bit more room on the outside edge of my right foot so I padded that area of my foot.
I have a bone protrusion just behind the big toe of my left foot (bunion?) so I padded that area as well.
I put on toe caps and a sock and tried the boot on. It was pretty clear right away that there was no way my foot beds were also going to fit in the boot, so I left those out for now. The overall fit was very tight.
Poped the shells only into the convection oven for 10 minutes slid my padded foot, toe caps and all into the liner and then into the fairly hot boot. I bucked the boot fairly tight, but not overly so.
The vacuum machine was already set for stance etc. and set to 200 Bar.
Wrapped the cold packs around the boot, into the vacuum bags and away we go. Time set for 7 minutes I believe.
Once the pressure was at the max the overall sensation was pretty extreme pressure but not painful. I wiggled my toes around to ease the pressure a bit and try to make room for the outside edge of the right foot.
The other sensation that I can say was distinctive, was that I could feel the shell getting considerably closer, again not painful, around my ankles and instep.
So I take of the toe caps and remove the padding from my feet and boot the boots back on.
Honestly...NIRVANA! I have never experience such a precise yet comfortable fit in a ski boot.
I have the perfect amount of space around my right forefoot, a perfect pocket for the bone on my left foot and a locked in heel with zero lift and no pressure points ANYWHERE. Sounds too good to be true but it is not.
Three, four days later everything has stayed the same. The shell has NOT returned to its original shape.
Given our success, the shop has done 3 other Lange boots with equal success (as well as numerous Fischer vacuum boots). They cannot imagine punching and grinding boots again for most people.
All I can say is that if you can convince a shop to do it for you DO IT!
I cannot say yet how I would deal with a brand new Intuition liner and shell moulding but we intend to figure that out too.
I think I will probably remould my liners with my footbeds or mould a new pair of liners with my now perfect shells.