Good morning all. I have read all your posts and very helpful they have been, but, stupidly, I am totally stumped by the preamble and although I have 6 very strange answers that obviously need considerable adjustment plus I think I have 11d & 39a (as you see, I am having difficulty with the normal clues too) but I still can't see how to change them. Would also like help with 20d as I have what seems to be an obvious answer to the word play but the answer doesn't fit well with the BRB definition, and it also messes up what I tentatively had for 27a., having trouble parsing that too. Help much appreciated, I do find this compiler very difficult.