jimmcc09,
I'm certainly no expert, but I have had to deal with several Freeview STB tuning problems following Digital Switchover.
Have you ever received ITV3? This was one of the services moved to MuxA/SDN at the national re-tune date 30/09/09. Some STB's need the old information to be erased, usually with a factory reset, before retuning, otherwise only completely "new" services are stored. If this is the case, you will be able to see channel 10 in the epg, and on the screen banner, but will not have a picture.
Another problem is that now that Freeview is full of rubbish channels, some STB's can not store all the services because they have reached their limit. The cure for this is to tune each Mux manually, deleting all the unwanted "dross" channels as you go. ( This is unlikely to be your problem as it the last scanned channels that are missed, and MuxA/SDN is in the "middle" from Black Hill which I assume is your transmitter.
I do not have any information as to how the tuning of the Beovision 8 Freeview Module works. It may well need a software update. A word with a dealer might be your best bet.
Regards,
Neil.