Gs 1000 clang clang

[gsnutter]

Hi there, i've got a gs 1000 thats not on the road at the moment due to some major modification. However when i did last have it on the road i was suffering some problems with the starter clutch slipping and making a horrible clanging noise.
Im just wondering if anybody out there has suffered the same problem and if there is any known cures? I have replaced rollers, plungers and springs all to no evail.

[agemax]

sounds like the rotor is spinning on the crank. remove it, clean and degrease it. lap the rotor on the crank using valve grinding paste. clean it up again, apply a small amount of loctite bearing fit and refit rotor.
apply threadlock to the bolt and TORQUE it correctly

[locomotion]

Make sure your battery is man enough to spin the motor at a good speed as the clutch can sometimes slip with low power. On the starter clutch itself the springs/plungers try to push their way through the casing so that should be sound