i have a 1986 kawasaki ninja gpz600 and there is something wrong with the carbs. i ripped them all apart and gave thema a throrough cleaning. but its still acting wierd. it will only reach 5500 rpm's and if i give it gas real fast it bogs down and the the thing that holds the needls flutters really fast and it almost dies. i dunno if its the air screw or what. if you can help me i would really appreciate it thanks.