on my 2001 cr25o. I finished top end today, and seems like it went back right. Has good Compression. idles high, yet never can get screw to make a big difference. and doesn't seem clean while idle. 1-3rd is nice, but seems like top power is sluggish. reeds are good, e valve is right, and carb is clean. any tips on setting mix screw right? same jets worked before (420, 30, stck needle) any ideas would be great!