My car is a very presentable #3 from the outside. However, all doors need adjustment for proper closing, gaps, etc. Had it on a hoist for the first time and discovered rusted out rocker panels and some body mount brackets gone. I figure that's the cause of the poor door fits. No rust evident on the outside horizontal painted panels under the wide mouldings. I don't want to "restore" the rusted areas; just make them structurally sound. Any suggestions as to the best/cheapest way to go about this? By the way, all body mount cushions need replacing.