monitor arm keeps tilting down

Premier Mounts AM100 Low Profile Swingout Mount for Flat-Panels up to 100lb.

Ergotron Desk Mount for LCD Monitor Matte Black 45626224

Ergotron 97-546 NF Cart Vertical Laptop Kit

Mount-It! Motorized Ceiling TV Mount With Remote | Electric Flip Down Pitched Roof Mount Fits 32 to 55 Inch Flat Screen TVs and Monitors | Black

Premier Mounts LMV Press & Release Pop Out Mount for Displays up to 160 lb

Ergotron DS100 Quad-Monitor (2x2) Desk Stand

Ergotron Neo-Flex Dual LCD Monitor Lift Stand

Amer Networks AMR1WS Sit/Stand Wall Mounted Computer Workstation for 24" Screen

Planar Quad Monitor Stand 997560200

Amer AMR3S32 3-Panel Monitor Stand - 26" to 32" Monitors

Ergotron 60-271-009 Slatwall Bracket - Black

Ergotron StyleView 60-593-216 Lift for Flat Panel Display White

Ergotron WorkFit-A with Suspended Keyboard, Single HD

Mount-It! Height Adjustable Ceiling Digital Signage Mount for 4 Flat Panel Displays | Fits Up to up to 75" Screens & VESA 600x400 | 264 Lbs. Capacity

Amer Mounts AMR4S32 Stand-Style Quad Mount - 24" to 32" Displays

Amer Networks AMR1AWS Sit Stand Combo Wall Mount for Workstation

Mount-It! Motorized Fireplace TV Wall Mount, Electric TV Mount w/ Height Adjustable Drop Down Arms For Mantel Installation, Fits 65 - 80 Inch Screens

Mount-It! TV Lift For Screens 32 in. to 48 in. | Height Adjustable Hideaway TV Lift Adjusts Up to 65 in. | Vertical Lift TV Stand | Black

Mount-It! Pop Out Video Wall Mount | Digital Signage TV Menu Board Mount For 32 to 70" TVs & Up to VESA 600x400 | Commercial Grade 154 Lbs. Capacity

Ergotron StyleView Multi Component Mount for Keyboard, Flat Panel Display, Mouse

Ergotron StyleView Multi Component Mount for CPU, Flat Panel, Mouse, Keyboard

Ergotron Wall Mount Track for CPU, Flat Panel Display, Keyboard, Mouse - 42"

Mount-It! Digital Signage Dual Screen Ceiling Mount, Fits 45 - 55 Display Screen with Cable Management and Anti-Theft Locking Hole

Mount-It! Digital Signage Ceiling Mount for Two Screens | Fits 45 - 55 with Anti-Theft Locking Hole | Suitable for Commercial Application | Black