OK, looking at your map, and doing what Wonko suggested, will give you exactly what you want.

What has happened initially is this: CC3 with regards to the HEX fill likes to work with WHOLE hexes, and will force the borders (with regards to the hex area) to edges of a whole hex).

BUT, If I do as Wonko suggested, with the following options: HEX Horizontal, spacing 175 (closest I could quickly calculate), labeled, select points, it will fill the entire area (but will still only label complete hexes).

Click image for larger version. 

Name:	HEX-EXAMPLE.png 
Views:	345 
Size:	66.5 KB 
ID:	36138