Hi there, I've been recording music in GB for about a year now and it all went fine. For some reason track volumes of my latest recording are blocked. I can't drag the knob from left to right of most of my tracks to adjust the volume. It does work for some though. Nothing to do with real or midi instrument because both types are ok and both go wrong. The only way I can change it is when I switch on my midi keyboard and adjust the volume knob on the keyboard. But then again, GB changes it automatically as the song is being played even though the track volume line is flat throughout the whole recording ! Tracks are not locked. This doesn't seen to be happening in my other recordings. All settings seem normal and I can't find a difference in settings between the ok and problematic tracks... Can you help please?