Can I fix a worn toe piece on my ski boot?

I loved my old Salamon SX80 ski boots. I never found a more comfortable pair. The problem is the moulded toe piece is worn on the underside from walking and means the bindings don't work properly because there is insufficient pressure on the friction plate. Is it feasible to buy a toe piece and custom fit it to the toe by making a cutout?
mjt, January 2011