DDJ-SX2 Jogwheel makes a hissing noise!!??

DDJ-SX2 Jogwheel makes a hissing noise!!??

I just got my SX2 a day ago, and i noticed as soon as i started using it that in the jogwheel its like rubbing on something and it makes a scratchy hissing noise. This in only in part of the turn on the wheel but its really bugging me. I think its probably needs oil or something right? But I don’t feel like taking it apart. What do the jogwheels ride on?