I purchased and installed new zoom zoom carb on my 99 big bear 350. It starts alot easier where it used to start once or twice then you would have to wait awhile. But it needs at least half choke to run if you cut off choke it slows idle all the ways down until it dies. I tried turning in idle screw but just makes it harder to start. Also with half choke on i put in gear and it will go if you barely hit throttle anything past that it cuts out, any ideas?