I seem to remember others have gone up one on the front, that should give you all you need, and would be my first move.
Try to get a high quality sprocket, preferably a Suzuki one if they are available.
Often sprockets are hardened all over, this can cause gearbox output shaft spline wear over time, so it is better if the sprocket wears at the splines rather than the shaft.
This is more of an issue with off road bikes, but is still applicable to road use.