Hi Hectorsdad,
Thanks for your info, Although I have a 1metre dish and a Humax HD Freesat decoder I have very little HD channels.
The general feeling is, as you say, I may have to " Tweek " the dish a little to receive all the HD channels.
Yes, I do have an alignment tester that I used to set up the original installation and on some channels I get a full 100% signal, but zero on BBC 1, BBC 2, ITV, etc etc;
I am returning to France next month so armed with as much info as possible, I hope to solve this annoying peoblem.
Thanks again all the help. sorry for the delay in responding.