IF you have a very flat arkansas stone, spray it with wd40, and give the ways a LIGHT stoning - no more than the weight of an egg on the stone if it is a 2X6; MUCH lighter for a smaller stone! You can easily wreck the ways with a stone if your not careful...
You can use varsol on the stone if you immediately oil the ways afterward.
The banjo gears in the headstock can be greased with moly grease but you have to make sure the bushings they run on are oiled... that's where the wear will show.
If your change gears are greased it prevents oil from getting to the shaft and bushings, which will result in scoring, eventually. I just noticed you don't have a quick change dear box for threading; If you had change gears, they must be oiled....
p.s. you can never oil too much!