ATR Throttle Calibration Grayed Out (partially)

Hi there,

I'm just now getting back into Hans' ATR, and while my throttle levers appear to be working, in the EFB's calibration both "Max Power" and "Full Reverse" are greyed out and have the word "Fixed" in the box. I can only set ramp, notch and idle. I swear this used to work fine for me. Does anyone have any recommendations?

I'm using Thrustmaster TCA Airbus throttles, which I've used before with the ATR before a reinstall. 

Thanks in advance,

Pete