Leaky Holley 885

[Marv 49]

Grandpa years ago had tried to fix the leaking fuel line fitting that goes into the carburetor with JB weld. This slowed it down but never stopped the leak. He always kept a baby food jar under it that he dumped each time he drove the car. When I got the car, I founded a “self tapping” fitting that I screwed into the bottom of the carburetor. I had much better results, until now. It started leaking a while ago so with light pressure I tried to tighten and it went from tight to loose. There is very little threads left now and looking for solutions. I read on another post where someone used Devon Metal patch around the threads. I know these carbs are a little bit of a pain and hard to come by. Does anyone have some ideas? Also, does anyone know what the original thread and pitch was of the fitting that is supposed to go in it? Thanks