I see what you are saying, it does tighten it up some but i think my arm is worn to much.I put the arm in a vice and tightened it up and i still can get a small flat head screwdriver tip to fit inbetween the the bushing outter shell and the arm. the outter shell doesnt have a groove in it like its worn. I guess my next question would be is do they repop lower arms or should i be looking for one at a junkyard ?