How much rotating slack is there supposed to be on the front driveshaft when it's not in 4wd? I have checked and double checked everything in the front end and all is tight and secure. The driveshaft is the only thing that has some play in it, but it's not the U Joints on either end. It's kind of like it's loose in the front differential, not really loose, just has some play, but I'm not sure how much play (If Any) that it's supposed to have.