Slow gauge

No tape on mine, compression fittings on both ends of the line and permatex 59235 on the npt at block.
I did have a look today at the other copper line kit i purchased with the other and it may be the problem, when looking at the ends it looks like they haven't opened up the copper tube before soldering the fittings on, I de soldered this one cut the ends off, cleaned it up and re soldered .
Hard to see and take pic off but end of line was terrible.

20211026_163140.jpg

20211026_165940.jpg