Throw them away. They sound like they are at least a shell size to big, if not more. They will never work well for you. Oh yea, you could try some of the standard cures we use on boots that people bought to big. An extrmely commen practice unfortunatly. You could get medial & lateral shims, a thick old tounge pad, stack a few bontex boards under the footbed, etc... But these boots will never work. First, if you manage some how to get your foot snugged up in the heel pocket, you will be standing about 2cm behind where you should be on your skis. Maybe more, if they are a toe mount like K2 and Volkl used to be. Second , you will probably never be able to flex these boots properly. Unless you can really get a nice snug fit with the upper cuff and tounge, they will ski like crap. These boots never fit well. I don't car how much weight you lost, there is no way your feet became an inch shorter in lenght. Sounds like the shop you went to had no clue. If you need a wide high volume boot, get one, but don't get a longer boot to try to get more width, this just does not work. Once again, if you pull you foot back into the heel pocket where it belongs, the widest part or your foot will be behind hte widest part of the boot. Go to a real ski shop, near a resort. One that makes custom footbeds all day long, and one that does custom liner/ shell hacking and stretching. A shop that is not afraid to move a few buckles. Then, try to get one of the gurus. The shop I work at has a about seven people working in boots. Of those, I would say half have a good idea of how to fit a boot make a footbed, and customize whatever needs to be done. And we are a good shop, at a ski area. Footbeds should, if done properly, give you more room. Huh? Yes they will support the foot in a more neutral position, and it will not spread out as you weight it. Good footbeds will give you comfort, control, and warmth. Buy them. For your feet I would consider Instaprint, Comform'able, Superfeet Ski Vac, or some other thin footbed that will not take away the volume you seem to need. Be wary of Kork, or Surefoot's Amfit (it's not really custom, but that is another story). These tend to be very thick, and take up a lot of volume. You could grind the Amfits thin. I have had do do this retro for a bunch of buddies who got them free, me included. Avoid toe crests. You may think they seem very custom, and grippy, but if you grip with your toes, you will pull yourself into the backseat. Think about it, is your balance going to be better with toes spread out or curled? An old balance drill is to pull your toes to the top of your boots while you ski. Try it. Buy new boots. Get them snug, they will pack out. Get Footbeds. Have more fun.