grinding noise when idling or pulling clutch in

[mike_neon]

hi all, not so hot on the technical aspects of biking so i will be as descript as i can be.

in short

GSXR 6 - SRAD

there is a grinding noise that is now getting progressively worse which comes and goes (coming and going more frequently) which sounds like its to do with chain/sprockets/drive. you know the grind you get when you have tightened your chain and as the chain is slacking it hits a certain 'spot' where it creates a grinding noise, then goes when it slacks a tiny bit more..... its that but it is now happening all over the show. its not a hurrendous problem, annoying none the less and obviously is going to get to a point where something needs doing. can some one please point in the direction of what it is and is it a major job to get sorted. as mentioned in the title it is happening when the bike is idling, or at certain low revs when pulling clutch for gears.

hope this helps, thanks all.

[mike_neon]

also forgot to throw in, the light on the MPH counter has stopped working. is that something that can be taken apart easily enough to be replaced. the rev side is working fine, just not the MPH. thanks again

[Fortuna]

Big nut that holds the clutch basket on might be loose.