Has anyone experienced the Nodal Ninja III big knob that holds the upper and lower channels not fitting properly. I received mine yesterday and when I try to connect the two pieces together it screws about 5 turns and then is super hard to screw together such that it seems the screw diameter is too large. Just for the heck of it I took the other knob that would hold the bracket to the camera and that knob fits perfect and this screw is smaller than the larger knob.