We recommend using a lever in the cross holes of our adjustment knobs to make sure the mount is "set". 1/8 - 1/4 turn will do it. 
 
Our "Tightening Tool" is a great solution:
 
-Made of Stainless Steel
 
-5/16" Diameter (to fit in cross holes of our adjustment knobs)
 
-4" Long
 
-Split Ring to add a tether (not provided)