Chevrolet Trailblazer Ball Joint

Had New Tires Put On Car Was Told By Tire Shop That There Was Cupping Of Tires And I Should Have A Front End Alignment Then Was Told That...

Is There A Trick To Pressing "out" The Original Ball Joints From The Lower Control Arm? Do You Have To Grind Off The Crown Top Of The Ball...

I Have Had Some Of The Front End Redone- Tie Rod Ends, Lower Ball Joints And 1 Or 2 Other Things. It Did Fine Right After That But Then...