Help! R45D rear hub making infuriating noise...

[TronnyJenkins]

Friends, I recently purchased*a basically new set of Enve G23s with*R45Ds from a forum member. I converted it to use XDR using a new CK conversion kit. On my first ride, things were great for around 40 miles, then for some reason for the last 15 miles, I had a very annoying creak or pop sound develop. I thought for sure it was the bottom bracket, but I narrowed it down to the rear hub by using my standard road wheel on the same bike and alas, no noise. I took the wheel out and pulled the rotor, preload*adjuster, and then the drive shell to make sure nothing looked wrong and or dirty. It all seemed fine. I put it back together, the noise still persists.

I am happy to get any help or advice regarding this matter. The noise makes riding unbearable. Video evidence below!
I also emailed CK to see if they have suggestions.

https://youtube.com/shorts/RkRFUUZblu4?feature=share