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.
about actually getting supports right.
no default settings on any slicer is going to do it right. and even i don't have a good handle on it yet.
but it's deffinatly possible to get a nice settting so it gives a nice result and isn't permanently fused.
try increasing your z gap of the support. and also turn on support interface. (it make a solid roof)
if it's still fusing you need to lower your print temperature.
(or just print the one that is split up so you can turn off support)