ok so i ordered this ball joint
http://www.speedwaymotors.com/p/3523,27_Screw-In-Lower-Ball-Joints.html?itemNo=ball%20joint
and it doesn't work...the castle nut wont spin its too big and the actual shaft is too fat and wont go in far enough for the cotter pin to go in if the castle nut did tighten down...it says ref moog K727...is there somethin i am missin??...Do i need to get these replaced or do i need to rheme out the hole?