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.
On your picture the lower left srew looks like the one that must be under the yellow part. The upper left srew looks right, the lower left must be the same as the upper left one...
If all is correct, the bearing must touch the extruder without filament. There is no space between the bearing and the extruder without load.