worn fingers on the clutch basket for sure.You can remove the basket and file them smooth again to get a bit more life from it but it should be replaced as that allows the fibres to rotate a bit within the basket and they will end up snapping off.
get a new cable while your at it.
for the gearbox use plain old 40 grade non friction modified mineral based oil.. Nothing else.
see those grooves on the side of the basket fingers?
They shouldnt be thee and grab the fibre plates and stop them from separating smoothly
check you fibre plates too as some fingers may be snapped off already