Tuning O-rings size for Huben K1 filler probe

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Look for an Artemis probe, the Huben probe are either very small or don't enter. The Chinese that manufactures them is hypermiope and doesn't see the numbers on the machine well

It can also give you a quick 1/2 second air release when starting your air charge if you do it with a tank, sometimes it seals the air leak and then you can continue to charge slowly