Hi, This is my first post! Just need some advice, I have a kawasaki zx7r 2001 all the sliders on the carburetors go up with an equal amount of pressure bar one which just flys up with no pressure when manually lifting it. On revs 1 2 and 3 lift good but 4 Doesn't move, when inspecting the diaphragm doesn't sit in the seat and actually looks smaller or needs stretching to sit properly which I can't do does anyone know where I can get a new one or second hand? Any advice on a dyno kit would be great I have the exhaust just want to know what to get. And.... When removing bypassing the vacuum air thing what does it do to the bike, trying to get as much hp as I can! Thanks guys.