I had a few set up problems as well. Center the tank, get rid of the fuel filter, use small fuel tubing. I found it needed to have a nice and wet prime, that turned into a flooded condition real easy. I found the following procedure worked well. Fill tank, with throttle shut- fill carb venturi. Open throttle to high idle, flip prop a few times, then apply glo and electric starter. It would usually fire and run long enough on the prime to get the fuel lines full. MA 6x3 worked best for the plane it was on.
Good luck, MikeB