Thanks for the reply Michael - I agree, and there are other issues too. This is an incredibly dense composition, and although I enjoy fixing broken problems I think this may be at the limits of doability. One should begin with a list of all thematic lines, to be retained (or replaced with something of at least equivalent quality). The current summary in post 8 is incomplete I think. Even if the problem proves unfixable, this nevertheless allows a better appreciation of the content and will form part of the solution when I put the problem into PDB. I will have a shot at this if you don’t.