Bought a shutter release, a threaded cable plunger type and it did not fit, rod into camera too long. Where should I go and about how much to spend on a release plunger? Are these somehow adjustable for travel length of rod? There is a tiny screw at the top under the push button. I'm wondering if you might type exactly what I need so I can type it into the interweb and purchase one of what comes up. So... I need another cable going from tiny round port to fire strobe also. Meaning I have no idea what size I am looking for, for either cable. This is a Isolette with a J looking first letter I. One cable to fire shutter and one to fire flash. Thanks for reading.