Is there any way to lock the Arca Swiss Z1-Sp ball head to the tripod's center plate. Manfrotto uses grub screws (https://www.bhphotovideo.com/c/produ...ew_set_of.html
to accomplish this. The Arca head seemingly doesn't use grub screws. Apparently you hand tighten tighten the head to the center plate via the main mounting screw but due to the weight of the Toyo 810MII this will eventually loosen and suddenly the camera will rotate out of position. Below is a photo of the bottom of the head. The small hole on the outside plate will rotate resulting in unloosing the main mounting screw. The movement of this plate is independent of the panning action of the head which rotates in its slot on the other side of this plate. Inside the small hole there appears to be a small screw with a circular head which is positioned between the panning locking arm and the tension release knob of the ball. I'm guessing that this small screw is for adjusting the locking of the panning head but has no effect on bottom plate. Any insights into this?
Thomas
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