Hi,
Seems like you don't have any real time field experience at all---or you are just pushing your comments just for the sake of it---.
We will tell china about upgrades like we have done before and they will do the upgrades at their cost.
I hope that this concept is not foreign to you---.
By the way---what subject is your Masters & PhD in---( so that I can communicate better with you ). My background is in automotive engineering, microbiology, biochemistry, human physiology & english literature at the somewhat bachelor degree level.