If the advancer weights are working OK, they probably don't need help. When I have them out, though (like engine rebuilds), I soak the whole thing in solvent to strip off all old goo, then dab a small bit of grease on the weight pivots and inside the points cam. High temp grease is good. There used to be "points grease" for the rubbing blocks, I am sad to say I used the last of mine in 2005, though. It is a yellow petroleum-based grease that is like wax, and has a great affinity for phenolic points feet. It soaks into the material and burnishes them in like glass.
If I ever find another tube of it, I will have bought the 2nd one in my lifetime (since 1964 when I had that first CT90).