I replaced my advance plate/shaft and cam because the plate and shaft were fractionally bent due to the bike having been dropped and the centre small nut went slightly off centre when tightened.
I was fussy and it ran ok but either way the cam part (should be fine), base, arms, springs etc you can have foc. Only a c clip is missing.
This is for a CB500/4 K1.
I’m away until Monday. PM me if that suits.
Regards Jeremy