I actualy never did find which of the seamingly endless sets of gain stages is the “MAIN” setting…but I think I figured it out…
I didn’t understand you having to remove the record trig before actually playing back the audio…(it is a shame scenes can’t themselves have different trig settings at each side, one set to “record” and one set to "playback would be SOOO much easier)
anyway, it seems my recorder was lesft “open” as I was cross fading, so onsequentally I was picking up the fading audio, then playing that back, whilst picking up the fading audio, and playing that back…etc etc…solved!!