Michael, this is why I told you, set it, and forget it. Just set the power to 1/4 to 1/2 power on the flash, set your shutter speed to say 1/160th or 1/200th, and then, work with your aperture to do the rest.
Easier that way. 
I know, Im just having a fall out with the designers.....
its a great thingie, Love it!!!

