I ccan do you a nos rotor and the main jet leaf springs do appear on a US website when in stock but only in sets of 4, stainless and not cheap.
Can pprobably find a used spring
But these and the rotors are now like hens teeth so not cheap pm me if interested.
Ask nurse Julie if Trigger has any of the stator contacts left he had etched a long while ago.
Do you mean the primary chain sprocket on the shaft? Never seen one worn