I was preparing for a shoot today when I realized that the top stage of my Zephyr had a lot of vibration that you could feel and hear while shaking the rig.
After a bit of investigation, I realized that the play was in the side to side adjustment and after opening the top stage, I noticed 2 allen screws that would tighten it.
Now there is less movement, but I'm not sure it's completely gone. Could it come from anywhere else in the top stage? is there any other spot to check?