The "claw" is the spear, I assume you mean. The claws, I glued those into the toe guards with E6000 and they haven't come out since. I also have tiny screws on the inside holding them in. The toe guard cover is affixed to my boot with industrial velcro, completely lining the inside of the toe guard. The key to successful industrial velcro is to put it on and NOT TOUCH IT until 24 hours later. If you test it too early the glue on it will fail.
Need any pics let me know. I've paraded in mine for years, no issues.
SeattleZam