After 12 years of flexing shutter blades with tweezers, a jeweler's screwdriver changed my whole approach
I was at a shop in Portland last month and the old timer there watched me struggle with a sticky Copal square and just handed me a tiny screwdriver to run along the pivot edge, which cleared the oil film in one pass, so why did I never think of that and has anyone else been doing this the hard way?
That screwdriver trick is the same thing my grandpa used to do with a pocket knife on old door hinges. Same idea. One thin edge slips in where a fat one cant. Its always the little tool that wins. We just assume bigger is better and fight the thing for years.