To rehash a bit: The known problem here is that rust particles and other garbage in the surge tank gradually collects on the pickup screen as the car is running and plugs it up. When the car is shut off, the crud falls back to the bottom of the surge tank, so if you take the pickup out it may actually look clean! Next time you start it up, the crud gradually plugs up the pickup again. Very, very difficult to get that junk outta the tank.
Jaguar’s fix was a replacement pickup screen, twice as large and therefore twice as difficult to plug up. In theory this might make it impossible to plug up; it could get completely covered with junk and still be able to pull enough fuel through to run the car.
My fix is different. Remove the pickup tube, take the pickup screen off the end, and heave it over the fence. Reinstall pickup tube without it. Then install a 1/2" inline fuel filter between the pickup tube and the pump inlet – a bit problematic because they’re so close. I actually installed about 3 feet of hose and made a big loop around under the battery tray so the filter could be installed without pinching a hose. From then on, whenever crud plugs up the fuel system, you take that inline filter out and throw it over the fence, and it takes all that crud with it. Install a new clean filter and you’re good to go.