This unit was running rough. So far we've replaced the plugs, coils, mixer, regulator and vapor hose. It runs great if trim valves are disconnected but as soon as you plug the trim valve connector in it has a horrible idle. If I bypass the valves and leave them plugged in it runs great but the check engine light comes on. Any tips or knowledge on why the trim valves would cause such a rough idle would be great! Both trim valves have been replaced.