RE: engine tuning - pinch test
Going along with "Piper Chuck", I rarely do a high end pinch but if I do, what I said is how i do it but I don't even think I have done it in a year. What I have seen is those who use it set the high end and then pinch test it to get every single leaning rpm out of that sucker and I just don;t agree with it. Honestly here, anybody can set a high end needle. it's the low end you need to get good at.