Kodak Retina Reflex IV with a mystery shutter problem, part 03

Another Reflex IV. This one caught my attention on a local auction site. It looked good, was described as not working, which of course, only makes me more curious. The auction description was correct. Consumables used servicing camera bodies: I use naphtha (cigarette lighter fluid) for cleaning metal parts. CRC Heavy Duty Lectra Clean for dried grease that the naphtha won’t dissolve. A generic wax and grease remover to soak mechanical parts prior to cleaning in an ultrasonic cleaner. Glass cleaned with normal domestic glass cleaner. Parts are lubricated with Inox MX6 (a synthetic grease), Rocol Dry Molybdenum paste, MicroLubrol Helimax XP helicoid grease, graphite powder, or graphite grease as needed. Leatherettes are glued back with Ados F2 adhesive. Consumables used servicing shutter and lens assemblies: Naphtha (cigarette lighter fluid), or occasionally CRC Heavy Duty Lectra Clean. Lenses cleaned with normal domestic glass cleaner. Parts are lubricated Rocol Dry Molybdenum paste, MicroLubrol Helimax XP helicoid grease, graphite powder, or graphite grease as needed.