Success ! After another retune I started scrolling through all the numbered and named channels, tho' most aren't available for Freeview, and found the one I want, Prime, was now numbered 243 !
I was then able to delete Prime from the original list of channels, where it was in the channel 5 slot, and replace it with the signal from channel 243
Don't understand - but all is well.
Thanks for the advice.
Last edited by ExSp33db1rd; 15th October 2013 at 09:12.