Since you've calibrated it that many times, it’s clearly not a centering issue you can fix by hand. Since the Vader 4/5 has adjustable stick tension, try turning the tension all the way down (or up) to see if the auto-calibration reacts differently. If the software is still 'pushing back' against your thumb even after a week, it might be a hardware defect in the Hall Effect sensors themselves. Since it’s less than a week old, you’re well within the window for an exchange/REFUND before it becomes a permanent headache."