I just got the August issue, there is a big article on the 08yz 450. I have an 07. The magazine recommends as follows= main 160 / pilot 45 / nflr needle 3rd from top / leak jet 55. I did the o ring mod and added a Sunline fuel screw. All other specs were the same as the article, exept I did not move the needle from the fourth position because I read some threads that said when moved to third from top it ran like crap. I ride so-cal high desert, the pipe and filter are stock. What do you think?