Good to hear that. I ran 3/8" copper for the return line on my Newport 383 when I put a TBI on years ago. I used it because I had some, and it's easy to flare. A little worried since manufacturers always use steel (or did). I figured soft uncorroded copper was better than rusted steel. Today, manufacturers use heat-shrinked nylon without even clamps. Copper seems better than that. Still, I am using steel on my current Dart build.