Don't bother looking. Just take it in and have them change all the rubber
fuel lines there. It is an extremely dirty job as all fuel will drain out of
the tank during this job.

Yes, time to change all rubber fuel hoses, if they have never been
changed before.  In my experience, they last 15-20 years.  Yours is at
the high mark already.  It might also be a good time to check ALL rubber
parts, including suspension, especially front end.

The hoses need to be replaced from below, no access from back seat.  Get
the hoses first.  They have metal thread at one end.  All other hoses in
the engine bay use the standard 7.5mm ID fuel hose, cut-as-you-wish.

If you are handy, run the car until the tank is almost empty, roughly
15-20 miles after empty-tank light turns on.  Put a 2 gallon bucket
under the tank, loose the hoses at the rubber end and drain the tank
empty.  Now you can change all hoses.  Use some rags to capture spills.

You can also replace the in-tank filter at this point, though it
requires a 46 mm socket which I find not easy/cheap to get.  If the
in-line and main filters are old, replace them too.  How old is the
little hose that runs between injectors?

After the work, it will take a very long crank (about 2 minutes for me)
to get hoses filled with diesel and start the car.  Spread out the
cranks so you don't overheat the starter.

Diesel is very good solvent/cleaner.  If you don't reuse the diesel back
to the tank, you can use it for cleaning.  I usually clean the work area
before doing any disassembling, using diesel or used ATF.

Oh, yes, wear those blue gloves.  Latex gloves will be destroyed by
diesel in seconds.