Before and After Cleaning a Minolta XE-1 ISO/Aperture Contact Dial.
If your meter is ever jumpy or unresponsive to aperture changes, get in there and clean this with some >70% alcohol, a cotton bud, and a rubber pencil eraser. Good as new and now it functions!
Dissassembly instructions here via this very helpful video: https://www.youtube.com/watch?v=M8e5MFq9zSM
