Locking collar on Karma Drone

I crashed my Karma drone recently and when reviewing the damage I noticed that the collar that locks in the stabelizer to the drone is not as it was when I bought it. It requires. I have managed to attach it back on but it is not as good as it was. Please advise what I can do.

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0