Bearings or Shock?

Hi

Bike: stumpjumper fsr elite

well iv been riding it once or twice a week on trails since i got it a few weeks ago.

Anyways whilst taking it apart to put into the car when i flipped it upside down i can feel a small amount of movement as the back end drops a little feels like a couple mm .

the other day i undid all the bearings and teflon'd them and span them with a towel covered screwdriver (cheers for the tip supersonic). and i also did a seal service and reoiled the fox shock.

Any ideas which it is most likely to be or how to find out?


Thanks