Tom,
I'm currently finishing up the carving on a Chambers, Marshall kit that I've been working on, off and on, for a LONG time. If I remember correctly, when I was laying out the carving pattern, that area around the entry pipe was the "weak link". The problem is that the original is so worn that it's difficult to discern what exactly was there.
I've not seen Houston Harrison's drawings, but no doubt, he did a better job of filling in the blanks than I did. I tried to keep the feel of the tang carving and as close to what I could see on the original.
I may have some pictures on my other computer. ( Come to think of it, my original pics were sent to me by EK before he published that article on his web site and they are the same ones now seen there.)
P.S. Is there any difference posting pictures on this new forum verses the old one?