Since we swapped the CO2X chiller for a new chiller 24 Oct 73704 (2nd t-cursor), the CO2X chiller has unlocked around once per week, mainly on Tuesdays and although is still decreasing in power, appears a lot more stable, plot attached.  

The CO2X laser power really stopped unlocking and decreasing after the unlock 10 Oct (1st t-cursor), on this day we swapped the HWS SLEDs (shouldnn't effect CO2's but is in same rack as CO2X) and both CO2 lasers tripped off (there was Beckhoff OM2 work).