Now that's kinda funny....and not surprising..
Engineers, given enough time, will put so many little changes in prototype during the initial build, that the engine they chose initially to power it is now too small.
I have no experience in aircraft, but I do in boats and ships, and I see the same thing in all sorts of construction and design.
Looks like they will have a variant before the plane is widely distributed.
Deja Vu !
“The primary weakness of the F-14A was its TF-30 engines, which left the Tomcat distinctly underpowered and which were prone to frequent stagnation stalling.”
http://www.airfighters.com/page.php?id=40&pg=4