Keith – thanks for the comprehensive reply. I just wanted to check that you can get +10 dB gain with a VCA fader full up, which I checked this weekend.
The ‘weird effect’ that I mentioned before was due to an audience mic part-cancelling out a particular channel when faded up – it just happened to be attached to a VCA group, but this wasn’t the cause. When I switched the phase of the audience mic it improved the situation significantly…
