Circular diagram using block arrows (2007)

[Shevvie]

I'm trying to create a diagram using six block circular arrows.
After manipulating the yellow arrows on the shape, I can't get the thickness
I need to insert legible text without losing the arrow head itself.

Any suggestions?
thanks

 

[Echo S]

There are usually two yellow adjustment diamonds on an arrow. Does adjusting
the two of them give you something better?

Otherwise, I'd suggest using a smaller font or moving the text outside of
the arrow -- so it's beside it, not in it. Look at some of the SmartArt
diagrams to see what I mean. (Insert | SmartArt, look in Cycle especially.)