i have a major problem that i cant figure out. My banshee wont idle, it loads up on the bottom end, runs good 2nd through 3rd, in 4th it will run right unless i open it wide open and it seems to almost quit but if i let off and just gradually accelerate it runs good, but if i good wide open is falls off with no revving and no power. I have changed the main and the pilot jets and still cant find the problem. i have fiddled wih the idle screw and the air screw and cant get it right. The only thing i havent messid with is the needle. I have a Trinity Stage II 2 into 1 carb kit w/ a keihn PWK (not sure what size). Can anyone help me?? I need it bad.