Jim,
I have corresponded with Ian on numerous occasions. He somewhat sits on the fence on this one, and he certainly hasn't come up with anything to convince me. In fact he has provided me with some evidence for my thesis. I'm not dismissing anything 'out of hand'. My comments are backed up by extensive study comparing PB's versions with all other extant versions. What study have you done on PB's versions?

Of course these collections are interesting, particularly from my point of view.