To remove the head for return to ADSI:
Take the left and right control panels off
Remove the top rail cover
Loosen the long y belt
Uunclip the belt from the back of the head
Remove the white cable from the back of the head
Remove the tinsel from the top of the head
Loosen the 4 screws, spread the bracket apart, and roll the head toward the back and lift off the rail.
