Losing my mind about G923 pedal calibration.

When I fully press the accelerator or the brake pedal down, it only registers at around 70% for a game like ETS2. I want some way to change it so that games detect that 70% as 100% but calibration in joy.cpl is greyed out and I've tried everything from changing usb ports to editing registry editor. I can't figure it out. Please help