Tvheadend

I am looking at moving away from DVBLink on a Synology Diskstation. I have TVHeadend installed and have disabled DVBLink on the Diskstation. I use HDHomeRun. It all worked OK on DBVLink. My problem is that I have tried endlessly to get Muxes to scan successfully but always is set to IDLE FAIL (scan no data failed in the log window). For my region I use Pontop Pike and I have researched the exact settings for transponders rather than rely on the pre-sets (the pre-sets do not scan either by the way). I am out of permutations for muxes and forcing a scan now and got wondering if there is something else I can check out.

HDHomeRun TV adaptors appear ok and I have created the networks for them (DVB-T).

Any help is appreciated.