Knife sharpening problems.

[deerhunterp]

I like to sharpen my knives freehand. I've become much better recently at getting a sharp keen edge all of my knives. Despite this however, I still manage to get a very small flat spot at the apex of the belly on all of my knives. Any ideas? Thanks!

 

[2 shot]

Here is where the sharpening experts are. http://www.bladeforums.com/forums/forumdisplay.php/794-Maintenance-Tinkering-amp-Embellishment

 

[22-rimfire]

What is the "apex of the belly"? Speak English please like I'm in the 6th grade.