I have a rowe R91 which is displaying error codes 30 and 32. I have removed, cleaned, and tested the optical switch as well as cleaning the gear that the optical switch follows. Optical switch has tested good and also lights the home and pulses the index leds. Optical switch was also adjusted to home as per the manual. I have cleared the errors and they immediately come back and the carousel continuously rotates. All components on the mech control board have been checked and are within 10% and transistors are not showing shorts. All connector headers have been reflowed as well. Any ideas or advice what I could have missed.