Thanks for that Simon I will try when I get back from vacation. It will probably be a month or so before I can experiment with it. I had fitted pull-up resistors but had reconfigured the pins using an overlay in /boot/config.txt. As i have a perfectly working Backup box with some extra Oled messages at the moment I don’t want to have to reinstall a week and a half out from going away.
Thanks to everyone involved in this project.