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.

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Hey, sorry to hear you've ran into trouble! In the future, rails take priority over everything else, so always print them at 100% or you're in for a world or trouble with assembling and mounting. I have since then corrected some tolerances on the mounting brackets, but I do hope everything is working fine!