wk9k

So I was checking my inner cv's because I have the harsh vibration only when accellerating and I can grab the inner cv on the passenger side with the wheels on the ground and i can move the inner cv up and down side to side about a 1/4 inch all around. I thought where you slide the spline into the differential supposed to be rock solid in there but it looks as though its pretty sloppy in that area.. The differential isnt supposed to be sloppy is it? Whats up with this. Also on the driver side is does it a little but not as bad as the passenger side..