Any info will be much appreciated. Recently got bike running,(hadn't run for 18 months or so).There's a definate, positive selection of gear then release clutch..... nothing, blipp throttle in neutral, clutch in,select gear... nothing, clutch in blip throttle select gear...nothing, clutch in select gear blip trottle.... needless to say... no joy, repeated the above three times with engine at operating temp. There's no abnormal noise or vibration, ther was no previos problem and no engine work done, any ideas?