This repair was a pain in the butt. Two easily accessible phillips screws on the bottom sides, diagonally installed. Then three hidden phillip screws - all to remove the window valence with the attached shade mechanism.
The shades snap in place using four brackets mounted within the valence. One of these brackets had come completely out, the nearest one was almost out. I secured all the brackets then snapped the shade back in place.
Then lots of cursing while trying to hold the valence in place and secure it. Eventually I had a second pair of hands holding it while I bumped it left/right, trying to find the original holes.
The final (unresolved) injury is the spring unwound on one shade and now requires me to manually roll it up. I'll look in to that when its much cooler/ on AC (I was working on it, at home).
Any hints/ tips on an easy way to rewind the window shade spring?