On my 1995 Prelude 2.2 4WS, I've gone and mushroomed the bolt on the end of the ball joint on my front N/S arm, while taking the LCA off for polybuyshing. This means I can no longer get the castle nut to go back the bolt. Is it possible to replace these ball joints ? If so, how difficult is it ? Also, if I get a replacement arm with ball joint, and the ball joint has a broken rubber, is it possible to replace the rubber on the ball joint ?