My ZR has just covered 8200kms. On Christmas day, it somehow transformed itself. Gone was the buzziness usually associated with this bike. And on the move, the bike feels smoother and 'sedated'. However, at idle, the engine seems to pulsating and sounds a bit like a detuned V-twin. I read in one of the threads in this forum someone claiming after some mileage, the buziness would go away. This has certainly happened. But, is it normal for the engine to pulsate at idle?