I will post my results when the deb packages are built and applied / tested with my image here I am building; although I am not using Systemback I seem to be having the same issue as you with Cubic and other methods I have been trying over the last few days.
I will post my results when the deb packages are built and applied / tested with my image here I am building; although I am not using Systemback I seem to be having the same issue as you with Cubic and other methods I have been trying over the last few days.
Fingers crossed here....