Command 8 Faders Calibration

[Spyderrp7]

Hello!
I have the Command 8, it's a great unit and has been running great on me for the past 3 years. Yesterday, the 6th fader doesn't work properly for an unknown reason.
The 6th fader, comparing to the rest faders seems to be a bit higher than the others. If for example in my Pro Tools session I have all faders at 0db, then all faders are at 0dB, while the 6th fader is at around 6db!
I went to the Utility section, then Fader Menu:
At Fadcal (Fader Calibration), the calibration ran smoothly. I just noticed that while all faders (except the 6th) start from 0 to 1023, the 6th fader starts from 0 to 959.
Also while I am at the Utility-->Fader-->Group, if I get all faders at the maximum position(1023), because the 6th fader gets a maximum position of around 959, because it tries to reach 1023, it struggles and I hear a periodic click while at the maximum position.
Any ideas what could be wrong with my 6th fader and how I can fix it?

My Command 8 has Version 02.01.02, and Bootloader 1.2

Here are 2 videos of my Command8:
Fader Test: https://www.youtube.com/watch?v=Hw5rBZdfKPs
Fader Group: https://www.youtube.com/watch?v=7q2dQB6O2B8

Attached a photo of the Command8 faders.

[Raoul23]

I have had this issue to sort this it's very easy. Unscrew the bottom and open the case. Then just disconnect the wire from the fader blow the dust out. Reconnect fader and all will be well :)