Very possible... I just remember a magazine I had reviewing like 50 or so markers for the 05 year, I believe it is an APG release talking about the 05 having it offset left 2 mm.
But then again, 07 is when they started the whole cure bolt thing, so that would make sense about trumpeting it then.
I knew PE started with WGP blanks, just didn't know that also included the feed tube hole. That ks for clearing that up.