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Cleaning the connectors
In order to clean the brass parts from oxidation
marks, you should unmount the gooseneck tube first from the ScorPi
assembly. Loosen the socket set screws in order to release the tube. Be
gentle when tightening these screws, threads are very tiny, no need to
tighten much. You can clean the brass with a soft wipe, and a mixture of
white vinegar and salt.