As proposed, I started this thread for all to share your KGSSHV Carbon build experience and to exchange Q&A. This is a natural follow up thread to the Carbon Group Buy thread.
Here are the version of Gerber files used for the boards in the group buy:
kgsshvcarbonv5.zip (amp board)
kgsshvpssicfetdual2new.zip (GoldenReference HV power supply, all-in-one version)
kgsshvpssicfetsinglenewrightfat.zip (GoldenReference HV power supply, B+ and bias)
kgsshvpssicfetsinglenewl