The best and easiest solution: Put a filter on the line before the pump. A second filter after the pump and before the Carb. The first saves the check valves, and the second saves the needle and seat. If you can, get the glass sediment type, they look right on these old trucks. A bit of aluminum or copper screen can be rolled tight and pushed into the bottom of the tank . It must be long enough to protrude above the bottom of the tank, but that might cause a restriction in flow, and it might not.
