Carter Fuel pump fittings

Just replaced my fuel pump (Carter M6270)
That's what was in it, no one seems to make a stock one. It's a mechanical for a '69 Dart, small block with six-pack. Has anyone had a problem with fittings? I could not stop the fuel leaks. It seems like they are 1/2-20 threads, but there was a pipe nipple on the inlet. Then I looked at the old pump and saw that the previous pump had a set up sealer on the fittings, I guess they had the same issue. I'm guessing that they used Aviation Form a gasket, it sets up. I just JB Welded the outlet fitting in. The inlet sealed up with liquid teflon.
What was your solution if you have had the same issue?