For an issue like uneven platter tension on the XDJ-XZ, it’s worth first checking the JOG ADJUST setting in the system menu, since that controls the resistance/tension of each jog wheel. If one side still feels off even when both are set the same, it’s usually not something that can be fine-tuned further in software.
From what others have reported in similar cases, slight differences between platters can sometimes be due to factory calibration variance or internal tension mechanism differences, and in a few cases it required a hardware inspection or service adjustment rather than a user fix. If it’s under warranty, an authorized service center is typically the safest route.
Also, just to be safe, make sure the jog wheel isn’t affected by dust or physical obstruction and that firmware is fully updated.
For local support or a quick fix, a reliable Handyman service could also be useful in getting help with setup or basic inspection-type assistance if you’re troubleshooting outside warranty.