I don't understand why the question is asked a third time? These lawyers have done a great job of answering your questions for free!! Love it! You would pay alot of money for this advice any other time.
That is "you don't know how lucky your are boys". so LET IT BE.
John owned 50% of "Back In The U.S.S.R." and "Let It Be" even though both were written 100% by Paul. That was their arrangement.