Couldn't get MUXD - Film4 et al. Got a BIG house, 8-way booster / splitter, FM muxed and demux'd at every output. Sony 800 boxes seem fine - or maybe its the best quality signal outputs. Luckily the splitter has a full output socket too which I don't use. My Panny 26LXD50 couldn't get MUXD until I switched the feed to the full output and it tuned fine. Unfortunately switching it back and it says 'no signal'. So looks like I'll have to try an additional masthead booster? Bummer is I already have to attenuate the FM from affecting the analogue so will have to fit the booster in between.