MDL-3 Solid State Dehumidifier for AMS

I'm lazy. Or perhaps more accurately, I'm lazy about maintenance tasks that need to be done periodically. I'll happily spend days or even weeks creating a solution to automate such repetitive tasks even if it'll be 100x as much effort building that solution than the few minutes here and there I would have spent over the rest of my lifetime doing that maintenance. When I got my first 3D printer, a Bambu X1C with AMS unit, I knew right away that I would be lax about replacing the desiccant keeping the filament dry so when I saw Stefan's solid-state dehumidifier video, I knew what I had to do. I wanted to learn CAD and the parametric ideas (and price) behind FreeCAD are right in-line with how I think of things. So I took Stefan's idea but otherwise started from scratch. He did mention, at the end of his video, some things he learned so I tried to correct for those; namely:There was very little space between the unit and the last AMS spool: I put the MDL-3 on the _o