I must say I continue to be surprised at the negative attitude of many posters here following any information about development problems.
As I have said before, any event that shows up weaknesses at this stage of the programme is pure engineering gold when it comes to improving the eventual service standard of any aircraft type.
The F35 is a 60 year programme (that started in 2000) and we are only half way through the second decade.
I would predict that by the end of the next decade it will be well sorted giving 30 years when it will be the aircraft to beat.