I need to repair the tuner-pulley-slider using some fine tuner-pulley-thread in the assembly. (Mouse attack !).  I have the spring !!

Would anyone know the correct plan and proceedure to redo the tuner-pulley-slide-thread assembly ? ..... and where can I get some of the 'special' thread ?  It seems finer than i have ever seen on such an assembly ?

And for the final touch ... it would be great if I could replace the cover (teak or rosewood) as the 'original' has a small piece missing from a damaged corner, next to the rear voltage selector.

In anticipation of any response, thank you,
and congratulations all, on your endeavours to maintain these fine and iconic creations of recent times.

John