Update - just done the centre row! Hoorah! Celebrating by stopping for lunch. It's 1.30pm here. The piece is starting to bow a bit then I realised I wasn't alternating the direction I sewed the rows on. THEN I remembered that when I was first doing it, I used my Acufeed (Janome walking foot) even to make the strip sets, and they didn't bow at all. SO will change feet after lunch. Fascinating stuff eh?! LOL