Below is an image of one of our Stud Mount Accu-Shot Monopods (BT01, BT04, BT05, BT06) that was INSTALLED CORRECTLY, but worked loose due to the set screw NOT engaging fully on the flat surface of the swivel.
Adding a washer under the sling stud resolves this. We have these washers and can provide them at no cost. Please Contact Us.
A proper setup will show a simple brass colored circle in the flat area seen as a red circle.