Thanx Andy

Does the 1.8mm goes carb side of the Y section and the .8mm air filter on the X piece ? What about the HRC kit, I assume that has different sizes ?

What I'm thinking is that as a 1.8mm equates to a 180 jet and 0.8mm to 80 jet I was going to get some normal jets, cut the head off and insert them in the pipe.

Cheers