Just installed the Kit, Blue needle 3rd position down from the top, 170 Main, fuel screw 1 1/4 turn, along with a power core 4 and I opened up the right side cutouts on the Air box. Starts no problem, idles no problem, It seems to stumble a little at about 1/3 throttle, after that...... Tons of midrange power!!!!! I came back in with a huge smile on my face, I can tell it's gonna be awesome when I get it right. BTW I tried the clip 5 posistion down from the top and it seemed to stumble even more. Current temp is 67 and altitude is 161. Will normally ride below 4000ft.