Did you know that the buttons for the premium rapid-fire trigger are already inside your non-premium joystick?

This trigger will unlock the rapid-fire feature. It is a copy (from photos) of the VKB rapid-fire trigger. I tried a few alternate designs and settled on the one most similar to the original, but included other favorites. The file is for the right stick, but simply mirror it for the left stick. 

Installation:
1. Open handle (6 screws)
2. Remove trigger. Be careful not to lose the springs.
3. Remove the screw (blue arrow) and circuit board. Be careful to pull straight forward and don't bend the connector (red arrow)
4. Remove screw (yellow arrow) and blank cover. I found it easiest to lift by the tab (green arrow)
5. Carefully insert rapid fire trigger onto pivot being careful to clear the yellow buttons. It should press these buttons when moved in either direction.
6. Reassemble

Print as originally oriented and no support is required.