First off it's a stock '01 Sport with a 231 and an 8.25 axle with only 17K - I am the second owner. I heard a noise coming from the rear this morning when I put it in gear. I only get the noise in gear, not in nuetral or park. The noise goes away when I start moving. So, I pulled over and got under the Jeep - exhaust is tight and shocks are tight. I can rotate the DS about a 1/2 inch and when I shake it, I've got about a 1/4 inch of play at the slip yoke. Is that normal?