Belt Attachment with Tensioner

I am redesigning the X axis on my CobbleBot 3d printer. I wanted create an belt attachment for the X axis to the Y that also included a tensioner. I could not find anything similar to this on Thingiverse so I designed my own and it works quite well. However I realized that the design for this will not work for my final design. This does not mean it will not work for other people so I figured I should just upload it as its own stand alone thing. I included the Google SketchUp file as well if you