My roof has a hole in it above the drip rail at the front door pillar and a crack that runs along the drip rail.

The po left the truck under trees and the drivers side was down hill tipped to the front. All of the water and leaves gatherwd in thw rail at this corner.

My plan is to patch this area. The rest of the cab appears fine from the outside. Upon feeling seams around and behind the headliner the seam feels rusty and pitted all the way around. Should i be concerned??