Originally Posted by WheelPower99
cheers guys these settings seem to have got me out of trouble
Careful with the grub screw holding the carby slider balljoint, the carby cylinder is soft aluminium and it can get chewed up and deformed if grub is too tight
As DJ pointed out, the middle needle should be flush, I found that if you richen up the middle fuel type became an issue. Some fuels ran while others just richened and stalled, so stick with the middle needle flush
A good engine tuning friend pointed out the Sirio needs fuel pressure so cant lean out top too much and use the bottom end to your benefit.