so, i started ripping off all of my control arms to do install my prothane polyurethane bushings, and i discovered that my axle shafts move in and out about an 1/8th of an inch both sides. they also have a bit of slack in them when you spin them. My ujoints are also shot yippee. anyway before i rip off my axle does anyone have any input on what could cause them to move in and out like that?. thanks for the input.