I am also getting this problem on my gigablue 4k quad, using unicable gigablue ultra lnb, i have the tuners setup correctly as i was told in a previous post, i am using the latest image 5.3.034, some recordings go to the end and some don't, was there an answer to this problem? i also get tune failed sometimes. just to add though, i don't think my recordings just end early, i think mine loses the signal before the end of the recording, i have checked all connections, all fine.