Stephen, thanks for the info, alraedy ordered Denso IA01-32. Good tip.

Now you've seen pistons, heads with squish nr and you know I use unleaded elf mits 46, any suggestions on the carbs settings I do have?

MJ 220/200
PJ 40 both
Needle 1169 both
Airscrew 1 3/4 turns both

I want to know if what I am running is safe or not, not to start messing around!

Many thanks