Looks like the "B" is flying and the 4 jets were at Pax River as of friday evening ready for the flight over the pond. Link below points to a "A" specific problem. Seems the A shed a few engine parts in the recent fire.
Agree there is a lot of pressure to get this deployment and display in the UK done properly. Imagine a whole host of engineers and spare parts on hand in that C-17.
Hope the show goes well! I've had the pleasure of seeing the B fly, and the sound on take off is most impresssive! Pretty normal sound when slow- can't hear the lift fan over the jet.
LO the "B's" have flown to and from Yuma a few times, and just did an over 8 hour flight to get ready for the UK deployment. So yes this is pushing the envelope, but they have dome some long cross countries.
UPDATE 3-U.S. Marines resume F-35B flights; F-35A engine parts found after fire | Reuters