I have downloaded, installed, registered and applied all updates. The installation is working fine.

BUT

I need to apply some overscan settings (left & right 24, and top & bottom 16) I've added the appropriate lines to BOTH config.txt files (in efi and vc) but they are being ignored. Without this the system is unuseable which would be a pity as I can't see the task bar and I can't maximize any windows or I lose the window controls.

Help please, how can I apply these settings?

Alan