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.
Hi there. I thought you changed the dimensions of the idler by purpose... :-(
Here is another slightly modified idler version with a higher base: http://pastebin.com/J4tu0xpG
Hopefully the bearing will have enough contact with the filament...