I have a buddy that has a 97 GMC Yukon that just had a new steering box put on his truck and it seems like the steering is too tight and a little grabby in some spots.. He was told it would loosen up as time goes by and has put about 100 miles on it so far.. He says it has got a little better but it still don't seem right to me.. So what would cause this ? How do you fix it ?