Resized files, making them fit snug around the TX.
Resizing the height too much was a problem, it would make walls too thin, so a spacer, attached into the lid with thin double-sided sticky tape.That spacer is used to hold my costume made sticks, so a M3 tapping tool to create the threads in it.
there is a gasket but the case is ok not been water tight cause normally it's usually not left in the elements to make it exposed.
All screws used a M3x18, in my case Allen-head, stainless