Gobo wheel or Color wheel not homing

Symptoms/Issue

Gobo wheel or color wheel continuously spin.

Description/Explanation of Issue

The gobo sensor is not reading the wheel.  The color sensor is not reading the color wheel

Fix/Solution

1. Replace gobo wheel sensor, or replace color wheel sensor
2. small washers need to be placed under each screw to the gobo wheel or color wheel.
3.  

Related Links/References