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Title: Second time purchasing same Item
Review: This is the second time I have purchased this Item. Used the first one for three years until the cat ate the cord. Purchased this one and it sucks. The track ball just isn't right, its very stiff to roll and jerky. I am currently using the track ball from my old unit which makes the new one fine. Installing the new ball in the old unit, which still works some of the time, I observed that is works a little better in the old unit than it does in the new unit.The features on this unit are awesome and it is very easy to use. Wish they would pay a bit of attention to quality control. They could easily have felt the poor movement if they had tried it.
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