X1 Base Case(remix) halved

Halved the base...had to run it thru [makeprintable.com](http://makeprintable.com), when I imported into tinkercad without first fixing the model tinkercad did horrible things to the model..you will notice one side it 3mm longer than the other, because slicing directly in two would have cut too close to one of the vent holes and it wouldn't have printed correctly, so I shifted the cut by 3mm putting it directly in the middle of the vertical and making the print much stronger

Added the full fixed file from makeprintable as well