[asynchronousman]

A jeweler's screwdriver (slotted, like you tighten your glasses up with) will often take them out. If they are stuck, slight heat from a hair dryer for short periods may loosen it enough to unscrew. Don't do that until you try a penetrant. Be careful as that plastic may be touchy.

What is affected by your grease problem and how bad? If it's hardened some, Goo Gone and other mild grease cutting products will dent that mess good. It won't go away like *magic*, it will take a little effort and elbow grease (takes some to clean some). I often hear about "Simple Green" but I don't know from experience how that does cutting grease like that.

Keep at it, you are doing well.