I'm trying to manually tune my Panasonic recorder (EX768) into UHF 67 in order to regain the Arquiva B stations, such as Film4, that were recently moved from 59. When I scan for them, all 28 channels are easily found with 10 for both signal quality and strength, but after I press EXIT (as directed in the handbook) none of the stations are saved. (This same manual tuning process worked fine after Mendip's analogue switch-off - when it was necessary because the auto-tune saves only Stockland Hill channels, not Mendip.) In case of interference from other equipment, I've tried disconnecting everything except the Scart lead for the (analogue) TV. I've also tried attenuating the signal (to various degrees) in case the signal is too strong. The one thing I haven't tried is a complete re-tune, but as this would involve deleting all the channels I do have, I'm reluctant in case I'm unable to re-gain even those. I have no other digital receivers to compare, but someone on the ukfree.tv site who lives near us reports a somewhat similar problem (though he doesn't specify Arq B) with a Panasonic TV and was told by Panasonic that it was a known issue with Mendip and equipment bought in 2010 (which both his and mine were).