Delay again on Day 2 of 773 LAX operation

WOW what a start for 773 operation for Japan Airlines LAX route. First JL062 was delayed because of ship change on Day 1. Now on Day 2, it was delayed again. This time because of strong wind at Narita. But JAL finally fixed the delay problem on Day 3. They were able to use another 773 on JL062 before JL061 arrives. So where did they find the 773? Has Boeing finally delivered JA743J?