The first pic is just the old trim suffering from shrinkage due to age. You can pick that stuff up at any camping world or you can see if they left an extra inch or two screwed underneath the wall. If so, remove the mounting screw and peel the stuff up to the point of separation then reinsert it and screw it back down so long as there is still some over hang. The second pic I find interesting as to why a crack would form in an area where the fiberglass is wrapped around metal. I'd investigate that further; otherwise so long as the nose cone isn't sagging or leaking, I'd would reglass it and match the color up best as possible, otherwise eternabond should suffice.
