Just trying to finalise the commissioning of my BB (dual hybrid1.1.0-RC6) Having done the setup, I had a Z offset of -0.7, however on trying an auto-level, the head moved right front, then mashed into the bed as the bed was raised. Not good. A while later, I tried running the bed up manually (and slowly!) in the same position. Even though the sensor was over the bed, it did not seem to trigger. I tried reducing/altering the lighting, but that didn't have any effect. I have a Clever3D bed, so I tried fitting that. Z offset is now ~2.5mm [very different!], and an Auto-Level now does not crash. BUT some measurements of the nozzle/bed gap suggest that the Z homing isn't consistent, in that it can be anywhere between 2.0 -2.5 mm. This feels a bit like the Z sensor is misbehaving. One thing I have noticed is that the red light on the sensor flashes/flickers rapidly when the z has homed - is this normal?