Trinity Buttons

Over the past year, I have gradually noticed issues with my character movements in WoW and FFXIV stuttering or being unresponsive when pressing the Left and Right buttons. It doesn't always register and my character doesn't move and when holding them to move, it occasionally stops registering as being pressed and my character just stops moving. I have already taken a can of compressed air and attempted to blowout anything under the buttons. I haven't taking it apart and didn't want to ruin the integrity of the mouse, without at least try posting here first. Anyone else experience this? And have any solutions for fixing it? Thanks!