I was pumping and saw the pressure fall slowly each time I stopped. I put the copper colored plug in the end of the quick disconnect and pumped it up to test. At 1500psi it leaks slowly at 2000psi I can hear it hissing from the quick disconnect. The oring inside the quick disconnect looks fine. Should I introduce some silicone grease?Tightening the quick disconnect end fixed it.
Just tightening the quick disconnect end to the hose solved my problem. Can't say I am surprised he sent you the part, that is the kind of support you only get from him. Any other company would want you to ship it back and then claim it was fine when it arrived.