You could have two different issues going on there. first the pillowballs could be screwed into the arms too far, that could cause the knuckles to hit the arms to soon and will not turn. 2nd, the pillow ball retainers could be screwed into the knuckles to far causing binding. Just back off on the retainers till there is a very small amount of play in the knuckle on the pillowball. Other than that check every part in the steering for binding, everything should move freely.