am going to try to lift the deck so I can inspect the fuel lines and probably replace most of them and also get a better look at the gas tanks
This is what you need to be looking for. The smell is the strongest when the tank is close to capacity, least when at a minimum level.
Water level in coffin is easily noted on sides of tank.
Hopefully this can be seen. Notice "crack" at bottom middle.
Tank corrosion has always been an issue on most of the older Aquas. Tank pictured is from a 1991. Most of the time it hides from view on the bottom. Tank shift can occur anytime but is often "seen" (with one's nose) with full tanks and rough seas. The shifting breaks away the corrosion, often exposing the leak(s) for the first time.
Good hunting.
