I have had to replace several of those springs over the last seven years. I remove the broken spring and replace it with a spring from a new hinge. That way I get two for one.
Each time I go to the factory I pick up an extra hinge so as to have one or two on hand.
Clay WA5NMR - Ex Snowbird - 1 year, Ex Full timer for 11 years - 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.