MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I have improved your end stopper. You had the tab on the wrong side. I put it inward so the bed won't hit the frame. Here is the link https://www.thingiverse.com/thing:2356274