Cleat placement w/ M075s?
 

I have a rather unusual cleat placement issue, in that I have semi wide and short feet. I have a pair of perfectly fitting shimano m075's (the MTB show), but I seem to need to put the cleat ( I use crank brothers) in the all the way back position to get it under the ball of my foot. Can anyone help me identify where exactly the "ball" is? Should I feel like im pedalling directly on the pedal or farther forward? I dont want to get injured by setting the cleat position all the way back, but it seems the most logical.....

Ball of your foot imprecise ghetto definition:
Halfway between the mid-point of your foot and your big toe.
Maybe a smidgen back from that point.
Good Luck.