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 already try to lighten 40mm version. Unfortunately not successfully. Lost about 5% if I can trust 3d Printer Calculator. Problem is that all versions are meant to be printed at 0% infill, but wall thickness is always the same. Shrinking duct connectors does not really help much.
Do you maybe have 0.3mm nozzle? If you do I can change wall thickness to 0.6mm.
Will anyway try your suggestions :)