July 18 (UPI) -- The Boeing Company has confirmed it continues to look for solutions to problems with its Starliner spacecraft that have left the over-budget project unable to carry passengers. Boeing confirmed this week it is pushing ahead and trying to address helium plug seal leaks on the spacecraft, as well as problems with its thermal shunts and issues with overheating thrusters. The company's officials have already said the spacecraft's next flight won't happen until at least early next