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 printed this today and had the same result - the part was ever so slightly too short to fit on the two posts in the case. I ended up using it screwed down on one end, and I put some strong double-sided tape down under the long extension for added stability. It seems plenty secure, but wish it had fit the posts as anticipated. I assume there must be some variation in the MMSV2s (which is what I have also).