Behringer X32 Motor Fader Replacement fixed alignment issue.

The replacement band of 8 faders I repaired this x32 with have the calibration right on where as the old Gen 1 X32 were about 2 dB off unity.
Here I show the difference between new and old.
Part :
Behringer Q05-AAQ06-00105
Left Fader Bank PCB Assembly for X32 (Original Version)

[@theknottyworkshopgeoffjung529]

We have just experienced the same issue after the Rev upgrade. What is the part/s that were replaced? The faders or the fader backplane?