Several correspondents have opined recently that having got the theme there often follows a laborious internet trawl to find possible answers (eg the recent "sausage machine" puzzle, many of which were relatively obscure) - and I think this is no exception! I mean no offence but having cold-solved the majority of normal clues, excitement becomes tedium for me, in this case, when there is no rhyme or reason to the encoding.
Also does anyone else find it frustrating not being able to follow a thread of posts? Unless we start each post with the number we are replying to, it's difficult to know who is answering whom...
Onward and upward!