GameCube Controller as HID, D-Pad "Sticks", doesn't "clear"

[TerminusBandit]

Hi,
So I want to use a GameCube controller as a USB device to play games. So far, I have (apparently) successfully wired it to an Arduino Yun (Given them, using what I got!), and built a barebones circuit with a Logic Level Converter to shift the 5v to 3.3 and back. I uploaded the GamecubeController.ino controller example, and launched the terminal, I can watch all the keys I am hitting. So far it all seems to be working.

Switching to Gamecube_USB_HID and running the Microsoft "Game Controllers" program, I see the GameCube controller. Again I can watch all the keys being pressed, joysticks move, etc. The D-Pad though, once its pressed, stays pressed until I press another direction; then it stays pressed in that direction. I thought it might be a hardware issue, so I played around with the control itself, and it seems to not be sticking in hardware. I uploaded GamecubeController.ino back to the controller, and watched it more carefully in the terminal. It registers when the D-Pad is pressed, but it also registers when it stops being pressed.

The terminal sees the button pressed as long as I hold it, and it sees when I let go; but this program just listens and reports back on whats happening. Its not actively doing anything (As far as I can tell). The Gamecube_USB_HID program seems to set something when the button is pressed, but doesn't clear it out after. Any help would be greatly appreciated. I am not a programmer, but it seems a software issue.

[TerminusBandit]

I cross posted this to Reddit, and someone answered with a solution:
At the end of the D-Pad chain of Ifs, added in:

else {
    Gamepad.dPad1(GAMEPAD_DPAD_CENTERED);
}

And that solved it. Surprised its lasted this long on the code.