I have the same issue Don,
With me it was just the opposite however. My heel was so perfectly sharp it was amazing, but the belly and tip varied from sharp to painfully dull

Lynn is right on the money (as usual) it's a pressure/angle thing during the honing. I have a tendency to allow the scales to dip down at the end of the stroke so the heel allways had a constant pressure and was allways flat on the hone at the start...

When sharpening anything there are two variable that cause problems for people: 1)angle of approach and 2)downward pressure
The straight makes the angle of approach easy for us because we lay the razor flat. However, keeping the razor flat through the stroke can be a problem.. as Lynn says, perfectly flat is key!

Try honing your razor in short strokes, so that no more than 1/2 the blade over-hangs the hone at the end of the stroke. Yes, this makes for a tiny stroke, but keeping half the blade on the hone will help you get a feel for keeping the blade flat and when you get a little more steady you can increase the length of the stroke to speed up the honing process...