Reply to Jog Wheel Grinding

Got my VCI-se like 2 weeks ago and noticed that the right jog wheel made a little scratching noise at a certain point of its rotation. I put it down to one of the screws being too tight and didnt believe about it much more due to lots of essays to do. So today I undid the screws, took the jogwheels off and rotated the gold part underneath, which made the same little rubbing/scratching noise at a certain point of its rotation.

So is this normal if not how can I fix it?