help please - speedo gauge has a ticking noise?

Ticking (or clicking) noise from the speedo gauge?
speedo cable inner was pulled out from the outer casing, cleaned and oiled, and runs freely.
So unless something fell off like an oring or spacer from the gauge connection end I think the cable is ok?
The noise seems to come from inside the speedo gauge where the cable connects at the rear, in that area somewhere.
Its quite loud as you can hear it whilst riding on the road!
You can even hear it when you shift the bike when the motor is not running and the speed of the noise is dependant on speed(rotation) of front wheel, obviously.
Anyone come across this before?
any suggestions what it may be?
Thanks
speedo cable inner was pulled out from the outer casing, cleaned and oiled, and runs freely.
So unless something fell off like an oring or spacer from the gauge connection end I think the cable is ok?
The noise seems to come from inside the speedo gauge where the cable connects at the rear, in that area somewhere.
Its quite loud as you can hear it whilst riding on the road!
You can even hear it when you shift the bike when the motor is not running and the speed of the noise is dependant on speed(rotation) of front wheel, obviously.
Anyone come across this before?
any suggestions what it may be?
Thanks