99 yz125 jet needle settings

I purchased a 99 yz125 this spring and am learning about 2 strokes. I changed my premix ratio from 40:1 to 30:1 after having eg rebuild the lower end and a new top end, so I am in the process of rejetting it. I believe I have the main about right and am now working on the jet needle setting. It misses at steady throttle but screams at wide open. It has good acceleration just misses at steady throttle. The book says that the needle should be in the fourth position. When I took out the needle the clip was in the 2nd from the top (out of five slots). I dropped it one position and it was better i think but still misses some. It doesn't miss at any other throttle position or speed, even wide open for several seconds so I think my float level is ok. So i have 2 questions, 1) is the needle clip setting counted from the top or bottom? and 2) am I on the right track in stopping the missing?

Thanks billtx, i will try that. What ratio of premix are you using? I have the stock pipe and silencer and it was supposed to have new carbon reeds but I don't know what kind. So when the book says the fourth position it is counting from the bottom? Thanks again

wow! Going up on the needle clip really helped! I am hesitant to move the main because I went up one before posting the thread and it seems like it has more power than before? Should I go with a smaller needle jet instead?

Thanks