KZ500 B3 winter overhaul

I am going to make an overhaul of the engine during this winter, and need some parts.
I am fairly sure I will need some new shims (not gonna order them though until I have taken measurements), however, I am not sure about the sizes (diameters).

Is there anyone who knows what diameter the Z500 B3 shims should have?

I also noticed today a drop of oil coming out from where the tacho cable connects.
Is there a seal/O-ring in there that could be broken and needs to be replaced?

I am anyway going to replace all gaskets in the engine, but are not sure wether there is a gasket/O-Ring included in the package I got for the tacho connection.

Thanks in advance!

Take a look at the link below. Ed

www.kzrider.com/forum/2-engine/598776-tach-leaking-oil#678914

Thanks Ed!