Seems like you're quite loyal to your boot. Here's an idea...Why don't you check out some auctions on
Ebay and use an old pair for spare parts? This quick search has two pairs of TNT's for mid $40's at a "buy it now price." There is a more general search at the bottom of the window for 64 "Technica" ski boots. I'm not sure where you live, but you may want to check out craigslist as well. Good luck and keep us posted.