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 had issues with the clearance (it's too big for my Prusa, that printer is so precise!). I will redesign it in OpenSCAD. It's a simple model, it won't take long. I won't publish it though because of the "No Derivatives" license. I can send you the file if you like. I will add plenty of comments to explain what I'm doing. You are my favourite designer on Thingiverse, I would be glad to help you.