Wow, Matt . . You work fast! Only 6 minutes since I posed the question!
I'm in 2016, but since seeing your reply, I realized that I shouldn't have been using the shortcut key (J) for the M7, but rather should have typed 'maj7', before addressing the 'b5'.
I'll go and rightclick the Chordsheet right now and get acquainted in Chord Builder.
Thanks again,
Russ