My wireless controller works perfectly except when I try to use star power. I have to bring the guitar to a complete vertical position and hold it there for exactly one second before star power initiates. Any one else having issues like this?
I got the game and guitar on release night, and the guitar and initiating star power worked smooth as silk, but since this past saturday I have to fight with the damn controller to get star power to initiate. Any help would be appreciated.

I too am having this problem. Any help would be greatly appreciated

Did you try calibrating the tilt sensor under "Options" in the game?

you can also use the back button to initiate star power