I had a 36 Ford 5-window coupe w. a 327 V8 Chevy engine awhile back that was my daily driver. I had humongeous problems with clogged fuel filters; couldn't drive 200 miles w/o changing them out (inline and in-carb). The crud in the filters was reddish mud looking crap. Flushed the tank a couple of times and it would help for a little while, but the crud always returned. Turned out my gas tank was rusting internally, maybe bad gas, maybe condensation, and the red crud was iron oxide. So I got a large round 5" speaker magnet and placed it on the outside of the tank near the fuel pickup point. Never had any more problems and never had to replace the tank. I still use magnets on my MJ tank. Don't know if this is your issue, but I would give it a try. :cheers: