monitor arm keeps tilting down

Targus Replacement Install Kit for Targus Magnetic Privacy Screens

Targus 4Vu™ Privacy Screen for 15.4” Widescreen (16:9)

Desktop Mobile PC Cart Height Adjustable Monitor Mount Computer Desk Workstation Home /Silver Opt

Targus 4Vu™ Privacy Screen for 15.4” Widescreen Laptops (16:10)

StarTech.com Monitor Privacy Screen for 27" Display Widescreen Computer Monitor Security Filter - Blue Light Reducing Screen Protector (PRIVSCNMON27)

Targus 4Vu™ Privacy Screen for 21.5” Widescreen (16:9)

Kantek Extra Wide Glass Monitor Riser, 39.4" x 10.2" x 3.25", Clear, Supports 60 lbs

Targus 4Vu™ Magnetic Privacy Screen for Samsung SH850 Series 23.8" Landscape

Macally Tempered Glass Computer Monitor Stand Riser

Mount-It! Full Motion TV Wall Mount Monitor Wall Bracket with Swivel and Articulating Tilt Arm, Fits 23 - 55 Inch LCD LED OLED Flat Screens, 66 Lbs

Mount-It! TV Wall Mount, Universal Fit for 13 - 30 in. TVs & Computer Monitors | Full Motion Tilt & Swivel 14 in. Extension Arm | Black

Mount-It! Height Adjustable Stand Up Desk Converter with Dual Monitor Arm, 47 Tabletop Standing Desk Riser w/ Gas Spring, Fits Two Monitors up to 32"

Mount-It! Electric Stand Up Desk Converter with Dual Monitor Arm, Motorized Desktop Standing Desk Riser with Monitor Mount for 2 Screens max 32"

Mount-It! Height Adjustable Mobile Stand Up Desk, Rolling Presentation Cart with Monitor Arm - Black

Mount-It! Height Adjustable Mobile Stand Up Desk, Rolling Presentation Cart with Monitor Arm - Grey

Mount-It! TV Wall Mount Bracket, Quick Release, Full Motion Swing Out Tilt Swivel, Articulating Arm Fits 19" to 42" Flat Screens and Monitors, Black