AucT
Cast your mind back to when you were learning to drive: you never knew how far to push the clutch pedal before it began to disengage... then one day you never thought about it any more?
Rudder is a bit like that!
With centre-line (tandem) seating, it's a lot easier to feel balance: ie both butt cheeks appear to bear the same pressure from the seat cushion. If one feels heavier - press that pedal to re-establish equilibrium.
Hope this helps,
Stik