Nunchuk motion sensor not working.

[MazrimTaim]

So I'm trying to play Skyward Sword and everything works fine, except the nunchuk motions. All the buttons on the Nunchuk work fine, it just wont pick up on when I'm trying to roll/spin attack/raise shield. is there a way to increase the sensitivity or manually bind the motion to a key? I'm using r6515_L8_x64 as this gives me the best performance, though I have tested this on the newest revision and still don't get any response.