monitor arm keeps tilting down

SIIG Dual Stacked Monitor Arm Desk Mount, 17-32", Max Load 19.8lbs Each

VICTOR® Monitor Mount with Single and Dual Arm Components

Monoprice Sit-Stand Articulating Monitor and Keyboard Workstation | Made of High-Grade Aluminum and Steel

Heavy-Duty Dual Monitor Mount with Gas Spring Arms for Monitors up to 35"

Heavy-Duty Monitor and Laptop Mount with Pole and Gas Spring Arms for Monitors up to 49" Ultrawide

Heavy-Duty Dual Stacking Monitor Mount with Pole & Gas Spring Arms for Monitors up to 49" Ultrawide

Peerless 14"x14" In-Wall Box for Recessed Power and AV Components, White

Peerless-AV SmartMount Articulating Wall Mount for 22" to 43" Displays SA740P

Amer Mounts AMR4P: Quad Monitor Mount - up to 4/Four 24" Screens

Mount-It! Premium Monitor Desk Mount Arm for Single Computer Screen | Heavy Duty Clamp and Grommet Base | VESA 75x75 and 100x100 (mm) Fits 24 - 32 in.

Elo Short Tabletop Stand for 10" I-Series E160104

Alogic Glide Mounting Arm for Single Monitor White C32GMA1

Dual Monitor Mount with Pole and Crossbar for Monitors up to 32"

Mount-It! Heavy Duty Monitor Desk Mount w/ USB & Multimedia Ports

Freedom9 Amer Mounts Dual Monitor Stand for 15"-24" Monitors - AMR2SU.

SIIG Articulated Freestanding Triple Monitor Desk Stand 13"-27"

FlexiSpot MA9 Premium Single Monitor Arm for 17"-49" Monitor

Mount-It! Single Articulating, Full Motion, Tilting, Wall Mount For 13 - 32 Inches, Samsung, Sony, Asus, Dell, LG, Sharp, Insignia, ViewSonic - Black

Mount-It! Triple Monitor Stand | Free Standing and Grommet Bases | Fits 19 20 21 22 23 24 Inch Computer Screens | Three Heavy Duty Adjustable Arms

StarTech Monitor Mount for 12" to 30" Screens

Mount-It! Laptop and Monitor Desk Stand | Full Motion Laptop Arm Stand | Ergonomic Adjustable Monitor Mount | VESA Monitor Desk Mount with Laptop Tray

Peerless-AV Universal I-Shaped Adaptors for 22" to 50" Displays PLPUNM

Mount-It! Dual Monitor Desk Mount | Pole Mounted Gas Spring Dual Monitor Arm | Premium Height Adjustable Computer Display Riser Fits Up to 32", Silver