Found it!!

Finally dug through enough boxes in the garage to find the extra Mode Selector Switch.


One side of the switch.


The other side of the switch.


Close-up of the torx screws.


This is the torx wrench that I used to take it apart and put it back together. The T-15 is a little small, but it worked just fine. The torx screws might be a T-16, but I didn't have a wrench that size.

Hope this helps some. Let me know if you need more pictures. I can always take it apart and take pictures if you need me to.