Hi, yes depending on driver version and firmware there is no calibrate option in the gamecontroler window.   In P3Dv4 just use the sim calibration (be sure to include the rev range). In P3Dv5 it should work without.   Be sure that in the controller window your throttle positions are indicated as expected. (In idle ~15-20%)   Check that you have set direct input in P3D.   If you have the virtual buttons activated, remove their default assigning by sim.