1968 Dart fuel sender replacement

I had the day off today. Jacked the car up,got all for points on jack stands and the old sender came out super easy. Went to put the new used one in and when.i did I noticed that the outlet tube rotates freely unlike my old one,therefore it would leak gasoline so I had to pulle the new used one out and put my old non working one back in. On the plus part the locking ring came off and installed smoothly with no tool

Anyone here have any suggestions on how I can fix this issue? When the output tube moves it obviously moves the pickup and float sideways too and would leak gasoline around that tube. As far as I know there are no epoxies that are ethanol resistant. And I don't know where I could take it to have it brazed around the tube so it would be leak proof and solid again. This sucks!

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