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.
Hi again Markus.
There is no problem.
As I wrote before, frame IS grounded thorugh quite thick two screws fixing PSU to it. They are even more thick than potential small screw with extra cable. That's why factory is not using this extra cable, probably.
To not "just discuss" but speak about facts I've made measurements supporting my words.
I will not elaborate big grounding metal sheet dug near my home, thick cable leading to it, fuses, earth leakage circuit breaker and home cabling.
Starting from my desk: