Hughes "retro fit" lifter not pumping up!

sorry , not shooting further . but these are even holding pressure without a load on them . i've never had this issue before . but these seal power summit supplied single lifters might be the closes to building a set . just sad that the world can't build lifters to work right off , and china is going to build jet aircraft airplanes for use in world wide , well time to go get a house outside of a flight path , lol . china crap falling from the sky too .