The (2) each, single window, HAM4 Septum plates are going to be re-purposed as the +X, 60", flat doors for the new A+ HAM7s.  The windows will get blanked-off with special o-ring sealed blanks and the annulus port through holes get pluggged with BSPP plugs.  By happenstance, the through holes are very close to what is needed the BSPP plugs used.  As such only tapping the existing holes was requried.