answers:
1. You should only set the SC trimmer to display 5-6 bars on the gauge. This way you can monitor over flow or cut hose. Medium restrictor is fine.
2. DHB will only affect the "gauge off" mode (yellow led reminder). Only the DFS (disable fail safe) will illuminate the "B" led on the gauge, reminding you the failsafe is disabled.
3. Can you check the order of wire on the grey harness is as follows:
