bobby,
The large fuel lines could very well be the problem. If they're loose then you may not be getting positive pressure in the tank from the muffler (the tank must be pressurized, you don't want a vacuum).

The large lines could also be causing air to be introduced to the carb line.

Replace the lines and I think you'll be fine. The TT 46 PRO does like a starter at first, it's a tight little engine.
Dennis-