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 might try that. I did drill out the hole a bit and put a small length of PTFE in between the drive bowden tube. It was only slightly successful. But I think I had other problems with my hot end causing more pressure in the tube than normal which bound up things.