Starting Issue After Drain Crank

But dont you think it would be the fuel pump because all 3 are filling up with gas. So all three needles and seats would be gone. Also which one on the fuel pump goes to the crank?

It looks like it would be the one on the bottom. The fuel line from the tank and the three outlet lines to the carbs all have barbs on the same side of a diaphragm. The impulse line from the crank is on the "dry" side of a diaphragm.

AS for fuel under all three cylinders, the case is all one space with individual case sections separated from each other only by what is called a labyrinth seal. Those seals amount to nothing more than a section on the crank with grooves cut in it the tops of which near touch a very closely machined section in the case halves. This slows the fuel mixture in a given crank section from being pushed into an adjacent section. When the engines runs, it works quite well assuming the bearings are in decent shape with near zero play. When the machine is shut down, the pressures in all sections equalizes soon after motion stops just as the compression in the cylinders also equalizes to atmospheric as the machine sits. If you have an inlet needle or seat which is leaking, it will fill one case section until it reaches the height of the labyrinth seal and then spill over into the next section(s). THat is why you may drain all three sections and find gas in them even with only one bad needle/seat. The easy way to see if or which carb is causing the problem would be to leave the drains open and look to see which one drips. If it is the same case section from which the impulse is connected, you can't be sure it isn't the pump without removing the impulse line. If fuel is leaking through the impulse line, then you know it's the pump.

The newer machines use a needle in the fuel inlet with a synthetic tip, unlike the older ones which had a plates brass tip which would eventually wear. Leaking needles and seats are no longer common. Foreign material getting caught between them isn't unheard of however. Figure out the source of your problem and correct it. If stray material in the fuel inlets is a problem, make sure you check/change your fuel filter. Replacing fuel lines wouldn't be a bad idea either as they will deteriorate with time.