Slight movement from the rubber is normal. The way I check for worn parts in the drive shaft is to rock the truck back and forth by hand with it in park or in gear (engine off). The rocking motion will show any back lash in the u-joints. Look for any movement of the inner sleeve inside the bearing caps of the u-joints.

John

John Luttrell
2001 4x4 short cab, 3 inch lift with 33 inch mudders and Powertrax no-slip in the rear


1991 Jeep YJ, 4 inch suspension lift on 33" BFG's