The only time I have seen this message (which is completely wrong, there is no error) is when I have moved a fairly large distance away from my last launch spot. I have always just done the recalib and things are fine, no restart has been required.
I googled Titan system enclosures and did not see anything that looked like your images. I would need a 3D Cad file of what you want. I don't have the time to design anything new myself currently.