I hav an FZ-S on wich i'v done about 5500 kms. I decided 2 do the servicing on d amount of running done and not on d number of days since purchased.So i'v done wid d 2nd servicin wid 500 more left for the third one.My bike sounded very smooth for quite some time... atleast till around 4000kms, but now it has startd roaring a bit which i dnt want, i want it 2 be like it was b4, or more like a CBZ extreme firing. I showed it at d showroom n dey said it was ok, and said dat dey wud lube d chain. I'm nt quite sure f it would help.I been takin my bike at around 80 quite frequently nw... is it because f dat ??? please help... its my 1st bike n i dunno much abt it !