View attachment 211375
Did you remove the metal cover plate by removing these two screws? I started to undo them but stopped, as I didn’t want a spring escaping and no indicators.
Cant remember now fella, twas years ago, where the stalk enters the switch, what have you got in there?
My first port of call would be too run some switch cleaner through it, or any degreasing type of stuff, brake cleaner, paraffin, petrol, WD40, anything like that, then dry it and try it.
If that works run some lube through it.