I thought so too. Firmware 1.42 killed it! No matter what I changed in the logitech software all forces in both x and y didn't change...in the end I unplugged the power supply to the stick.
I felt the same with Wings od Prey after firmware update. Dont worry. All you need to do is following:
Go to Logitech profiler > options > Global Profiler Settings > choose "Apply Persistent profile"
Configure that profile under > Options > Global Device settings.
My recomendations are:
Centering spring Unchecked. (You can check centering spring and set to 0% which add some friction without add centering spring)
Do the same for > Edit > Specific Game Settings
In game use approx middle strenght for FFB (40-50%)
Half of thoose steps are not important, but you need to be sure your changes do the job in game. I archieved even beter FFB feelings with Wings of Prey for now and for example DCS A10-C is simply stunning, even with latest patch.
It's possible that all people claiming strong FFB with constant force after FW 1.41 (1.42) didnt get into this point at all :/
Hope it helps.
EDIT: I can see you do not have G940 anymore
But nevermind, could be handy for someone else at least I hope