Hi , I use x52pro , never tried the way posted above , the only reason i load saitek profiler is to controll tdc with mouse lever.
Anyway , to have the pinky switch as modifier , I add it to the modifier list inside dcs option control menù .
Nothing more , when you want assign a combo to one comand , remember to press the modifier first , then the button you wanna use.
Hope it help ,
Cheerse