I shoot an X3. My WB is set at 13/16". C ock vane straight up. To me it looks like the henvane on the right side "should" hit the cables, yet I don't get a mark on the vane. It would not surprise me that your vane is hitting the cable(s).

I flipped the cable slide over and that moved both cables a little further away than the way it was installed from the factory. You could try that.

No the arrow is not spinning before the vanes clear the WB. As you were told, you probably don't even need to mess with this if you are getting good arrow flight.