Tvheadend

Hi All,

I'm using Freesat bouquets and most channels are appearing but I'm missing a few like Channel 4 (SD) and for some "England HD" bouquets BBC1 SD does not appear. I have changed to a new sat card (This fixed all duplicate channel issues) but the few missing channels remain. The Bouquet says 224 services seen but only 182 are mapped.

I suspect I have some signal strength issue but how do I determine which muxes are not strong enough? Is there a way to see which muxes are needed by a given bouquet?