I just installed upper and lower ball joints and now my steering wheel shudders when I turn it. I cranked the wheel with the truck off and some power steering fluid leaked out so I figured it was that, but I bled it and nothing has really changed. When I have the front wheels off the ground the steering feels fine (truck on or off), but when it's on the ground is where I have problems. I just read a post about someone saying that they had the lower castle nut too tight, but my book said something like 83-103 ft. lbs. I don't know if want to loosen it or if it's my power steering.