Probably just should have used mono until the very last side. Most of the Beatles stereo stuff sounds terrible. Not until they finally got eight tracks to work with in late 1968 does a natural stereo sound start to appear. Especially on some of the singles like I Want To Hold Your hand, Day Tripper and Paperback Writer where the mono just blows the stereo away.
I thought that any time the Introducing part and the artist name part were separated by the hole then that was a bootleg, but I could be misremembering.