Stick drift issues on the Vader 5 Pro

I recently purchased the Flydigi Vader 5 Pro, but I'm having a serious issue with the analog sticks.

Even after performing factory resets and manual stick calibrations multiple times, the stick center values consistently stay between 0.03 ~0.07.

As a competitive FPS player, I prefer a zero deadzone. However, the drift on this unit is so bad that I still experience stick drift even when I set the deadzone to 2. I cannot use the "Auto-centering" feature because of the latency and precision loss in FPS games.

1. Is this a QC (Quality Control) issue with the Vader 5 Pro? Should I ask for a replacement?
2. Or is there a specific calibration trick for this new model that I'm missing?

I'd appreciate any advice from other Vader 5 Pro owners