For my Avalon boat I have a 2 stroke 40 H.P. yamaha motor that runs good, water flows good and starts up fine. When I tilt the motor all the way forward and then flip then support lever down then lower the motor on it to transport the boat it is very hard to start when I get to the launch ramp when I put the motor down into the water in it's normal position. Could it be flooding in this position? Maybe bleeding thru the carbs just a little? Any suggestions??