Vacuum Advance Fitting

[tsanborn]

I have not been able to get the vacuum advance on my '56 Y-block 292 to seal at the distributor diaphragm end. I'm pretty sure that it's the fitting at the that's buggered up. It looks similar to a brake line fitting but smaller. Threads are 3/8-24. I've combed the parts store but they all seemed mystified by it. I know that I don't have a flair tool that I could use on it so I'd need to find one that has the line already fitted to it. Can anyone suggest where to look? I've hopefully attached a photo of the fitting but can't be sure.

Thanks, Tom

/Users/thomassanborn/Desktop/IMG_6109.jpeg