I think I've posted this before, but just to add to the knowledge base, I'm using a 0.75mm jet, it's sometimes tricky to get into neutral, but a good blip of the throttle usually sorts it out.
Remember oil flow will be proprotional to the area of the hole in the jet, which increases with the square of the radius. Therefore a 0.75 jet will flow about 6 times as much oil as a 0.30. A 1mm jet will flow 11 times the oil of a 0.30.
(I'm assuming oil flow is linearly proportional to hole area, which it might not be, but you get the idea).
"When compared to other motorists attempting to escape a zombie outbreak, dirt bike riders have a 23-to-1 survival rate." - The Zombie Survival Guide by Max Brooks