I checked all of my tire pressures before getting the alignment. The right rear was 1/2 lb off and all the others were the same. I knew tire pressures wern't the case of the pulling.

 

I also my alignment checked this past week for a slightly off center steering wheel, and right pull, Cesar checked it out and said the right front tire was causing it. He temporarily swaped the right and left front tires to verify the problem and said it was definitely caused by the tire. Cesar inspected the tires and could not find any visible cause, he said it may be from the tread wear, although he said looked fine
I will be watching it very closely for any signs of separation and if in doubt, I will replace both fronts shortly. Maybe someone will find another cause for the right pull also. good-luck.