I've read so many posts on float heights.... most of them say that they should be set BELOW the indication line on the carbies. Problem for me is, it just does not seem possible for me to lower the floats down that much. The closest I can get is about 5mm above the line, and that's by bending the plastic floats themselves (holding them in front of a heater, bending them and letting them cool). The needles seem fine. Smooth and conical. Seats seem fine. They have no problems blocking off fuel, it's just that when I bend the tabs up that much my needles are already stopping the fuel flow before it starts. My bike is a 3LN model. Any ideas anyone?