Replying to Is it easy to replace the grip walk wear layer on ski boots?

Im sick of putting on cat tracks every time and i was wondering if i could easily replace the wear layer on the toe and heel of my boots. Is it glued in there or do you just need to unscew the screws on the bottom?
Do you need to use locktite on the screw so you can get them solidly screwed in without stripping the plast screw holes? Are the screw holes even plastic or is there a metal plate?