There should only be one ball. As for the twisted retainer, it should be fairly straight. What this ball and retainer does is keep beer from poring out of the line when you uncouple the keg, it can be left out to see if the twisted retainer is causing turbulence.
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Malt is the soul of beer... and yeast gives it life..
but the kiss of the hop is the vitality of that life!
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