07 Chaparral Sunesta 214 - 1st boat, went to the gas station to fill it up (was empty) and the gas kept blowing back out of the nozzle port. Had to hold the nozzle on the low setting and stop every few seconds. After it was 1/3 full I was able to go full blast. Is this normal on an empty tank? I was thinking the vent system could not keep up since the tank was empty OR do I have a vent problem on the tank?