Wingman Contacts Dirty, Cannot Open Cover

Four screws on the stick itself must be removed (two screws are hidden by the black rubber boot. After the screws are removed, the stick comes apart into two pieces, but there is two plastic "snaps" that still holds it togeter. On the bottom of the stick there is a hinge that can be pried slightly apart with a flathead screw driver. Once the bottom is apart, I just wiggle the two stick pieces side by side until the top snaps apart.