A few questions about ports on the EDU-450 carrier board

I’ve recently purchased a EDU-450 carrier board. I have both a V1 and V2 EDU-450 - and I plan to use it on the V2.

Question 1 -

The Amass-MR30 connectors used for the ESCs have only one ground pin. It’s possible that the customer should combine the power and signal ground leads from the ESC and connect that to the ground pin on the Amass-MR30.

Can someone please confirm that this is what is intended?

Question 2 -

The pins that are available for the servo rail connections are missing two of the AUX ports. Are they available somewhere else on the board?

Question 3 -

There are two CONNECTIONS labeled “SBUS” - one is a GH connector by the HereLink mount, and the other is on the servo rail. There is also a label for PPM on the servo rail.

Are all of these connections all connected to the Cube’s RCIN? Or are they different ports?

Thank you!

All have been answered in the facebook post