1996 Ford Ranger Fuel leak

I have a fuel leak when the engine is running. Once the engine is shut off the leak stops. It’s not from the tank, it’s from above the tank where the fuel lines run. However you can’t see above the tank, and I can’t see where the leak is coming from. It’s near the area where the filler tube is. Do I have to drop the tank? I like your show. Thanks, Mike.