I don't really need mine to be super shiny. I just want something protecting what's left of the decals. It sounds like TR3 is not the right product, though. All four of my Featherweights have wear to the decals, so the shellac is clearly gone. A regular car wax doesn't seem to really add any protection. Maybe I need to put multiple coats on.
I'm just trying to come up with something to protect the finish. Maybe that's just impossible with 80-year-old machines!
Ila