You sure? I’ve never seen them change a jet. I watched Greg Anderson change emulsion at Woodburn and he said that’s about all he ever changed, other than the occasional high speed air bleed.
We didn’t have a long discussion about it, but he did let me look at his plugs and I’m not kidding when I say they were tuning so tight you couldn’t see anything without a very good magnifier.
He was looking at heat mostly and about a .030-.040 wide fuel ring.
Of course, that was probably 1995ish and I’m not sure if those were 4 circuit carbs. They could have been 5 circuit at that time.
