Noisy turn signal

[Broncono]

I've searched some threads but haven't found anything similar except some folks saying the cam needs to be replaced. THis is what's going on with my 1970.

Blinkers work great-- no problem, the switch itself seems a little loose , and when I turn it jumps and makes grinding noises!
Anyone run into this problem and if so what did you do?

Thanks!

 

[Viperwolf1]

Could be something trapped between the cam and TS arms or it may need to be lubed. Take the wheel off and see what's happening in there.