I currently have 3x 24" computer monitors on 3x Sanus SR213 full-motion articulating arms that stretch outwards about 12" mounted to 3 consecutive studs. I've recently rearranged my furniture and now the ideal placements for those arms don't fall on studs and I figured I might as well upgrade how they're mounted to prevent having to remount them in the future... That said, I'd like to build a 4' linear motion rail that I can mount them to. I am known more as a web developer than one who's crafty with my hands. The last time I was in a workshop was middle school doing basic stuff with band-saws and such, so please bare with me... The Sanus SR213s have 2 vertical mounting points that are 5" apart so what I was thinking is building 2x double-v rails, mounting one above the other, then having 2 upper and 2 lower wheels for each monitor on each rail (a total of 8 wheels per monitor) attached by some sort of plate or bracket that the wheels and the SR213 arm can mount too. Does something like this sound do-able? Practical? Economical? This is for a hobby, not a business, so I don't have a large budget to work with. Any suggestions to improve the idea and/or decrease the overall cost?