Hi Adam,
The inside of the brace box is 1mm larger than the diameter of the OTA. With the foam between the two, the box is screwed shut around the OTA. Loosen one side of the box and there is enough give to slide the tube up or down for rebalancing. Simple.
Glued the textured laminate yesterday, waxed it with car polish and reassembled the mount this morning. Very smooth,
.