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someone give me a comment about huma regulator for Huben K1. I bought 3 sets of pressure regulator from the Huben company and it still leaks the pressure. The bullets I fire may be very regular, but after fill to fire it does not hit the previous target, it always changes after each fill and...

Hi all I have a k1 huben and it suffers from a huge problem. The pressurization works so bad that the bullets don't pinch a target! When I adjust the pressure to 130 and let it stand for 1 hour it will automatically go to 150. I don't know how to fix it and where to buy it. someone help me !