Thanks guys.
Jeremy, Yes, its just where the W's come around tight and are bunched up.
Dana, I still file the sides but not on this one. This one is a take down handle so I went about things a bit different than normal. I actually heated the guard to a bright red and drove it onto the blade shoulders to fit it tight to the blade. In other words, I used the back of the blade and tang as a die. Then I went ahead and finished the blade and etched it. Also, I shaped the guard completely after the slot was established.