So I have come to bond with my K4 after some initial problems, and all had been well. But as of late it leaks all the time. I ordered and installed the larger oring on the bottom, and it still leaks. It not only leaks from the airholes, but i notice it leaking underneath as well. I have taken it apart and put it back together properly several times. I even switched from my p3 connector back to the original, and still the same issues. Is there a 2nd oring i should replace? Thanks. If you really like the K4 but want something even better that doesn't leak you should try.........?