This is where I really think "canon" in not really worth it. I understand attmepts to say this is mainline and this is fringe information, after all, all of the books, comic books and other stories can't really fit into one life time. Captain Kirk's 5 year mission would take about 50 years to have it all. But, how many "authorized" books at the time said one thing and were then de authorized afterward, after they sold quite bit, simply on the whim or needs of the current project? So as far as FJs Blueprints, I consider them absolutely fine as they are. In my opinion of course.