How can I get padded recordings on a Humax 9200T?

Is there a version of software available which adds automatic record time padding for a Humax 9200T (DVR/PVR)?

The unit is great, but it is a real problem that it does not automatically back-off a recording's start time and extend the recording's end time. Most of the recordings I make at the moment are clipped at one end or the other, because the programmes don't start at the exact billed time.

Really hoping that there is a fix (upgrade) for this issue.