Thanks for the info Stefan ( humungus)

lol - Iknow 540 pieces isn't everyone's cup of tea, but the bigger the better for me.

Stefan, you've created a monster!

Kidding, den! I've bookmarked this and when I can spare half a day, I'll maybe solve it :-)

I really like this one - it's colourful and you've made a lovely design overlaying as you have. Thanks!