I just acquired a HD-7 and while everything about is is perfect, the framelock does cover the whole tang of the blade. Its like was mentioned before. I was pleased to see Roshi chime in that he has the same observation but with no problems. The knife is perfect in every regard, rock solid lockup, but I am "used" to a liner or frame lock engaging at or left of center.
Every single other Emerson I have ever touched was perfect or near perfect out of the box. My old 7-A is as rock solid now as it was years ago, and I bought it used. I did re-profile the edge to a conventional V-grind, but I just like them better that way. I re-profiled my -10 and -11 also.
I have also had one experience with Emerson service. I sent a 7B in for sharpening, and it came back sharpened, tuned, and with new washers and screws. It was also in a new box. Excellent service.
I found this thread while searching for comments relative to the lockup on the HD-7. I may ask others if this is how it was designed (it is dead rock solid, afterall) but it still makes me a bit uncomfortable because of being conditioned on what to expect on liner/frame lock placement on the tang.