Salaam to you Dear Dr.
I am certain that even if several pages were lost of the Book, it would have not made any great difference to the Last Message, as the same warnings and directions are repeated several times. Our Mighty Allah certainly took care of all possible tempering; it is very unusual to find any items on the Glorious Book just being mentioned once.
I hope and pray our Beautiful Master to give you strength and enable you to continue your Very Important Task.
By best regards to you and your family,