[Ozzie Goat]

I don't have that fuel tank, mine is aluminum.
I had a hole from a stress fracture that was leaking.

I also cut a hole in my trunk fiberglass to locate the fuel gauge sender without dropping the tank. If you go that way, PM me and I'll e-mail pictures where to cut. I was poking in the dark, and as a result my hole is wholly larger than it needs to be.

Also, you have the hose to fill, the hose to vent, and the feed hose. Any of those hose end connections could be loose.

Hope that helps