So, I have an older Stern - Wild Fyre. I'm wondering if (after vacuuming and all) I should be using naphtha, Novus 2, or something else for light cleaning (some minor swirls, around holes, etc) before I wax with Mothers.
I think I should use naphtha, but I may just be paranoid I'll screw up any coating using anything else.
Also, anything special about cleaning the inside of a playfield insert ? Some of mine look a bit scorched by the light and wondering if I can clean them lightly as I replace bulbs.