brakes on the truck pull sometimes, in either direction and it is not due to the grade in the road. they generally pull to the right the hardest as you are slowing down, from about 10mph and less, if you want to take a HARD right take your hands off the wheel. i've put on new calipers, new brake lines and new wheel cylinders in the back. not being a brake expert thought i would get some ideas. i know i need new ball joints and the steering box needs help to, could that be anything to do w/it?