Help: Spare bridge thingy for Sterling AX40

Anyone know where I can get a spare one of these (pic link below)? This one won’t hold the high E string anymore, and the other 5 on my bridge won’t either and they’re all pretty worn and tatty.
IMG_9996.JPG – Google Drive

I’ve tried folding the string over itself a few times so the clamp has more to grab onto like this:
IMG_9997.JPG – Google Drive
and the E string still pops out. Infuriating.

Am I able to get ahold of replacement thingies like these? Or do I need a whole new bridge? Is it possible to use aftermarket bridges on the AX40 or is it proprietary? Am I stuffed? Do I need to get a whole new guitar? Any help is much appreciated.

Cheers