The 72mm aluminum ring stay on the short black tube without any screw. Try to detach the 2. I found that when I put the Letus on my camera, I can detach it easily. Remove the screws then drill another 2 holes (size 3/32) is another way of doing it if you prefer and you will need a set of 2 holes for each camera you are going to use. The first method will take less time and is recommended to change from camera to camera. Thanks.

Quyen