if you want to use cuety to control some martin mac 500 i would advise you to use mode 2.
Now, it's normal that you cnanot control the second color wheel and gobo wheel, cuety had been done for simple dmx projectors without more than 1 wheel for colors and gobo...
I f you want i can edit the fixture file for you to let you acces the wheel you need for gobos and color, just tell me witch one you need to use.