A:Answer The main pivot bolt seems to have some tolerance, allowing the mounted TV to tilt downward. The washers don't have enough friction to hold the TV's weight from tilting. Get a 14mm or 9/16 socket, and a 6mm (I think) allen key. Use them to tighten that pivot bolt and nut. Then gently un-tilt the TV to see if it doesn't droop back down. This was just my problem with a Samsung QN90B 65" which is approximately 55lbs. If your TV is tilting up or down on the pivot bolt, this solution should work either way.