I have a set of 18mm to 14mm auto plug adapters that were in a set of O-200 cylinders that someone gave me and I want to use them on my O-360A1A with a PMAG. They should be the correct length, but to confirm does anyone have a set of the short reach adapters from Emagair sitting around so you can give me a measurement from the end of the threads that go into the cylinder to the shoulder(without the copper gasket installed) and also the overall length. So basically what I am looking for is the length of the threaded section that screws into the cylinder and the overall length of the inside threads so I can figure of if I need to use plugs with the same reach that Emag is recommending.
