Trackball - Big Middle and Big Right button illuminations (swapped)

Issue: Pressing Big Middle button lights up the Big Right button (and vice versa).
Trackball device has cool feature that the lights for the big buttons can be: Always on, On when pressed, or Off. This is accomplished on the LCD menu screen: Press small black button, Scroll trackball down to "Button Settings", Press Big Right button (red) and scroll trackball down to -- Lights -- section where Big Middle, Big Right, and Big Left illumination settings can be changed using the Big Right (red) button.
When the "Big Middle" setting is changed to "Always On" or "Press", the Big Right (red) button illuminates. Conversely, when the "Big Right" setting is changed to "Always On" or "Press", the Big Middle (green) button illuminates.