Just over 12 hours to go

So, is anyone still trying? There is a big hint posted in one of the comments here on the site to help you with both 8A and 8B, but if you can't find it and want to know how to crack it before the end read on ...... 8A is a standard substitution cipher, but the text has been laid out in a square and then the square has been transposed (rows and columns interchanged). Excel is a really good tool to transpose it back. Just paste a tab between each letter and a return at the end of each line, save the file and then import it as a csv file telling Excel to use the tabs as cell separators. Then do frequency analysis and look for cribs. 8B is a homophonic cipher with nulls. The high characters (200 and up) represent nulls, and the low characters represent letters. It is not a very sophisticated cipher as 84 represents the same character as 184 and so on, so if you make that leap then frequency analysis and cribs will get you a long way. Also, as General Scovell tells you in 8A, you have seen this cipher (or part of it) used before! Good luck.