RE: Need help with a New Bright MXZ sled (with photo)
other than checking ebay, for these kind of toys there realy is no parts source, these are not hobby level.
i would try screws maby? and epoxy must sit for more than 24 hours before its fully cured and strong, and sometimes it still needs more time.
possibly build your own skis and mounting bracket? a few people have done stuff like that for there RC cars and planes, it would at least let you fix it, be strong possibly and even.