Today, I completed all terminations within the Vertex+XBM HEPTA control panel and, also, brought it up to the current revision (I think!).  Initial testing demonstrated newly introduced gremlins most of which turned out to be the result of intermittent or opened connections resulting from having disturbed and or strained the existing "push-to-connect" type terminations whilst completing the newest terminations.  The remaining unresolved issue is that selecting REMOTE from the HEPTA control panel results in the HEPTA pump starting.  I did not troubleshoot this issue today but will next time.  Also, testing of the 2 1/2" intake gate valve was disappointing at first and lead me down some troubleshooting "rabbit holes" but eventually I figured out that the "air-to-open, spring-to-close" actuator was just really sticky.  Once I upped the supply air pressure to 70psi and cycled it 6 or 8 times, it began to act as expected even after returning to the nominal 50psi.