Praetor, why don't you tie the Ent-B variant and the warp turbulence issue together? maybe the design changes on the B were an attempt to resolve the issue that ultimately either did not work or only partially worked making it not cost effective.
Chapter 9, paragraph 5,
"for a threat that, before that encounter"
Would read better if the second "that" was replaced with "this"
Chapter 9, paragraph 2,
"sufficient parts spares"
"sufficient spare parts"