Hey guys I have been searching forums and reading. So my rear diff bushings were shot getting the clunk diff was moving around. I replaced them with the creative steel ones. Took it for a ride and it's now a bang when letting off the clutch in mostly 1 through 3 and reverse. If I feather it no bang/clunk. I also replaced diff fluid. I chocked and jacked the car up looked under the back you can see the drive line jolt then release back again. Is this normal or is something else wrong thanks.