Hi, many thanks for the response and the links to the threads. Very much appreciated and now I know a little…
Tuner A ‘In’ is connected direct via aerial cable to the incoming aerial socket. Tuner ‘Out’ is connected to my TV aerial in – TV finds all Freeview channels as normal. See screenshot of Tuner A settings.
Tuner ‘B’ is not enabled yet! See attached screenshot. I decided to get Tuner A working then will add Tuner B.
As requested I have attached a zip file with both Lamb files (lambdb & lambdb5) – not sure which one you needed.