72 Duster with a Rusty fuel system....how do I avoid this???

Just want to add one more comment . Todays gasoline starts to break down after about 30 days in storage . Sta-Bil will help but additional applications must be added . No amount of filtering can cure this . The fuel is eating itself up . I suggest draining fuel system and running carb dry if long storage is anticipated . If you need to move car you can put some gas in the tank , prime the carb and with a fully charger battery start car, move it and let it run out of gas . Hope this helps .