When creating a new project the live loop track levels are initialised according to how the faders are set on the S2400 when the project is created. I would expect that the track levels for all tracks would be initialised fully open? Same as how sample track levels are set by default?
Currently the track levels for the looper tracks end up pretty much random which often ends up very confusing when you start recording a live loop in a new project. If for example the fader for a track was set to its lowest position when the project was created, then you wont hear anything when you start recording a live loop on that track.