Good friend has a TD24, it is at our local show and only runs 8-10 hrs a year. We have been rained out for 3 yrs now which means it only idled out of the shed and run long enough to cable up to the scraper and then unhook and go back in the shed. This year it has no fuel to the rear 3 cylinders. We are hoping it is just a stuck plunger since the front three have great fuel. Took the pump apart as far as we could without the special pump wrench. Everything looked great, but still no rear fuel pumping. Ideas?