monitor arm keeps tilting down

Club 3D CSV-1564W65 Docking Station - for Headset, Mouse, Keyboard, Workstation, Smartphone, Notebook, Tablet, Desktop PC, Monitor

Monoprice Workstation Wall Mount for Keyboard and Monitor

Amer AMR2AC Articulating Dual Monitor Mount - 15" to 27" Monitors

Monoprice 2U Wall Mount Bracket, 3.5in (H) x 19in (W) x 4in (D) For Network and Data Equipment

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

Kensington SD4855P Docking Station - for Notebook, Monitor - 100 W - USB Type C - 4K - 6 x USB Ports - 5 x USB Type-A Ports - USB Type-A - USB Type-C

Tripp Lite Safe-IT Triple-Display Mount for 17" to 32" Displays DMPDT1732AM

StarTech Single Monitor Adjustable Wall Mount Computer Workstation WALLSTSI1

Adesso 11 in 1 USB-C Multiport Docking Station(TAA Compliant) - for TV, Monitor, Projector, Notebook - Charging Capability - Memory Card Reader

HAT Design Works DMRS-1 Single 32" Monitor Desk Stand - Steel

Amer Mounts Based Hex Monitor Mount for four 15"-24" Flat Panel Screens - Black

Atdec Freestanding Heavy Duty Dual Vertical Monitor Mount

Cyber Acoustics CA Essential Laptop Docking Station - for Notebook, Monitor - 130 W - USB Type C - 2 Displays Supported - 4K - 3840 x 2160

Kensington MD120U4 Docking Station - for Monitor, Notebook, Tablet - 100 W - USB4 - 2 Displays Supported - 8K, 4K, 2K

VisionTek VT8100DL Docking Station - for Notebook, Mobile Device, Monitor - Charging Capability - Memory Card Reader - SD, microSD

Kensington SD5900T Docking Station - for Notebook, Smartphone, Memory Card Reader, Monitor, AirPods, Solid State Drive, Smartwatch

Peerless-AV Paramount Pivot Wall Mount for 22" to 43" Displays PP740

Heckler AV Cart for Single 50"-75" Display Black/Gray H700-BG

Cyber Acoustics Essential Docking Station - for Monitor, Notebook - 130 W - USB Type C - 2 Displays Supported - 4K - 3840 x 2160 - 4 x USB Ports

Amer AMR2C32 Clamp Mount for up to 32" Displays

SIIG Dual Monitor Aluminum Heavy Duty Desk Mount with USB and Audio Ports

Kensington Monitor Stand with SmartFit, For 21" Monitors, 11.5" x 9" x 3", Black/Gray, Supports 80 lbs

Hyper HyperDrive Thunderbolt 3 Mobile Dock - for Notebook, Monitor - Thunderbolt 3 - 2 Displays Supported - 4K, 8K - 3840 x 2160, 7680 x 4320

StarTech STNDMTV70 TV Cart with One-Touch Height Adjustment for 32" to 75" TVs