1995 E300D fuel leak
 

I'm a new member, I have a 1995 E 300D, great car, a few quirks. The important new problem is a fuel leak into the right side trunk well, where the fuel then leaks out through the well drain behind the R.Rear wheel. I have checked the filler neck, fuel sending unit, and filler overflow, all dry. How do I gain access to the front of the tank to see the fuel return and supply lines? Can see nothing from the center underside of the car in the tank area.
Thanks in advance, R.K. in Florida.