is there any crap in your fuel tank? What brand of fuel pumps are you 'going through'?
My original fuel pump died a few weeks ago (records indicate it was original at about 310,000 kms) and all I could get locally was a Carter fuel pump so I put it in. It lasted for about 30kms. When I did the pump replacement the inside of my tank was absolutely pristine, and the sock on the old pump was pure white and had zero gunk in the mesh. It totally blew me away how clean it was in there. However, 30 kms later, the new carter pump, with a new sock, and a new filter crapped out on me, simply because it is a POS.