You can save money on an expensive chuck by 3D printing it, and you can use the money you save to pay 1/20th of the hospital bill you’ll face when this thing fails.
I have a k2 that stopped working about 4 months of very light use. Creality has been providing warranty support, but it’s been a stream of parts they are sending me and either aren’t fixing the problem, or another one comes up. It’s been going on for months. I’ve had warranty claims with the OEM before, and each time, it’s been resolved quickly.