Jim & Dave,
Thank you for the info and reassurance. I owe you both a big beer! Phew... Sorry if I worry too much Can you imagine what'll I be like on the maiden flight of this thing [X(]

Think I'll probably add the WT-433 on to my Wacker order - may aswell at that price!

I was going to probably use a 'good' two stroke motorcycle oil as I know I can get that locally. I understand what you're saying Dave about the 'recommended' 20:1 ratio, just covering themselves huh?

O.k. I'm happy now