Tvheadend

I have a usb T-2 tuner with the above chipset, which has twin tuners.TvHeadend correctly identifies one of the two tuners as DVB-T. However, it thinks the second tuner is DVB-C. If I try and Select Networks from the configuring tuners screen it won't let me select a network.

I am using the Winter Hill transmitter in the UK and TvHeadend correctly identifies one of the muxes as T2. Is there anything I can do to convince TvHeadend that the second tuner is DVB-T2? I can add and configure the tuner using MythTV, so the tuner is definitely T2 and not DVB-C.