I've been through the process once and initially thought it successful.
However, I've just drained both my tanks for W&B and both the guages are NOT reading empty, to different degrees.
So, I want to start again but do I need to somehow zero the gauges first, and if so, how?

I understand from the instructions that the reading in the calibration page should change as fuel is introduced, but is it possible for those readings to either decrease or increase, depending on how the floats are wired. In other words can the numbers go down as fuel goes up and vice versa?

Thanks in advance
Colin