I have a 1995 EFI 700 wildcat I am having trouble getting to run. Its getting spark and will run when I put gas down the plug holes but as soon as the gas burns out it dies. I know its commons that many engines are tough to get gas to the carbs when it sits all season. I tried putting in gas 4 times and by then it should be running if its just no gas in the lines. What are some issues that I may not be getting gas to where it needs to be?