Well it seems that sitting out the sunshine was worth it. I've just read over my B322 EMA and it seems to be in the bag. (Where's the jumping up and down going "Woo Hoo" smiley when you need it?)
I've still got more than 3 weeks until it's due in though so I think I'll hang on to it in case I want to tweak anything, but it looks pretty good to me.
Finished.