I bought these before reading the reviews and after not "feeling" the threads during installation I went back and checked. .550 on quarter inch fittings. The default is 0.540 and it seems that most of them are actually around 0.530, making the problem worse. I solved it with sandpaper and a heavy wire brush application. I clamped them with a metal vice and now they don't seem to flow. If I didn't need them immediately I would send them back.
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