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.
altough the 3mm version was the first I made (and almost all the prints in the pics gallery of this project are printed with the 3mm version!) it is also harder to make it working. The 3mm filament need a stronger traction spring (shorter spring) and a higher torque. Being the first version, every part that is not explicitly marked "175" is intended for 3mm version. The driving wheel is MK8 for both, GOOD QUALITY Mk8, with sharp theeth!... I found E3D are very good altough more expensive.
The parameters you are asking for are machine depending. If you make the "Hephestos Upgrade Kit" I can give you the fw already configured and the profiles for Cura and Simplify3D for others you have to do it yourself. When you have a system "almost" working please contact me and I help you to make it, at least, "good" working. ... :-)