Hi all. Well my little compressor has all of the sudden quit making high pressure. I believe I have a generic version as there is no white "Yong Heng' sticker on it? I took the high pressure head off of it last evening and it appears that the rubber ring are worn quite a bit. This morning I tried to remove them from the high pressure piston but was only able to remove the top two as it seems there is a second hold down for the third one but I am unable to loosen it to remove it so I decided to just buy a new high pressure piston with the new rings already installes. All I can find are places in China selling the parts with a long waiting period to receive them? Are there any places selling parts here in the U.S.??? I have searched the web and have found nothing? Thanks in advance J.L.