Nikon 14-24 mm AF-S f2,8 focus issue

Hi!

I have an issue with my 14-24 mm AF-S f2,8 lens.

Primary Symptoms:

• AF Stall/Slip: When activating autofocus, the SWM attempts to engage, resulting in a slight "twitch" of the focus ring, but the internal elements fail to move. The camera eventually times out.
• Mechanical Manual Override: Holding the focus ring or manually rotating it during the AF attempt temporarily restores functionality, suggesting a loss of friction in the internal coupling.
• Tactile Play: There is a noticeable "gap" or loss of resistance at specific points during manual rotation of the focus ring, indicating potential wear in the friction clutch or helicoid tolerances.
  

When I hold the focus ring it obviously cannot AF stall or slip, and then the AF focus works perfectly. But it feels totally wrong to hold the focusing ring, especially because I never have to do that with any other lens that I own (plenty of them AF-S, primes, zooms, you name it).

What can be the reason for this? If I attempt disassembly, what should I focus on? Could it be the focus brush that needs to be replaced or cared for? Or is this a symptom of how the focus motor is dying?

Thanks in advance!

Providing a video:

Link to video: https://drive.google.com/file/d/1rzdfIfu...