Put a little on the clutch release ball and pin (chinese throwout bearing) and the actuating rod face. Put some on the shaft and main spring if you have it out. A lot of people put some on the clutch gear, I don't, I use a very little bit of graphite lube instead. Also, if you have the clutch gear off, there are ball bearings in the back, try to get something into them, but be careful, you don't want any grease on the clutch pads.