Hey guys. I was wondering what size tank i have on my 2004 203?? I was about 1/4 of a tank or so from being empty and i filled up and only got 18 gallons in? Whats up with that? Is there a possibility someone could have modified the tank size? It should be around 45-50 gallons shouldn't it? I checked the gauge in two different areas so I wasn't on a hill or anything like that. Just curious what you all thought.