It sounds exactly what I was thinking Bibio, as it moves anyway when tightening up I planned to do exactly what you detailed above
e.g over adjust to account for movement when tightening.
I'm excited to see if this reduces engine brake as much as you say, as I do a lot of two up riding (every day) having to iron the snatchyness and engine braking out with the clutch is getting tiresome
If I get chance tonight I'm doing it, I shall report back