worked until the hinges were cleaned and painted? take the springs off and try closing the hood, if it closes flat at the cowl without the springs then yes, the hinge pivots are worn, not uncommon
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics