I have an 06 banshee that I'm having issues with. you cannot start it without using starting fluid. once its started it will sit there and idle all day long. when you hit the throttle it will rev but wont come back down to idle unless you play with the carbs. we cleaned them, made sure nothing was mixed up between the two using an oem schematic, checked for vacuum leaks, synced the carbs with the tool. the jets are wide open. and the slides don't hang and come back down completely (while it stays revved). list of mods: Toomey t-5 pipes, pyramid reeds & cages, air box eliminated and using a single Toomey 2-1 air filter. T.O.R.S are eliminated, 280 mains, 25 pilots, air screw out 1.5 turns. 130 psi of compression on each cylinder, new plugs. pretty much at sea level. (Florida). its a pretty clean original bike. none of the electrical has been cut or altered and I believe its still the original top end. I don't know what would cause it to not come back down to idle other than a vacuum leak or something leaking internally in the carbs. I used to have a 98 banshee and never had the issues this one is having. Any ideas will be greatly appreciated. Thanks.