It dose not look all that bad, in most places. But around back, there was a 2x3 trim strip. I knew it was failing so, I pulled it off and tried to clean things up. This is what I found. So, what do I do next? Do I have to pull the sheeting off and replace it, or does one of you have a slick way to repair this? What went wrong, Should the 2x3 have been lower down so only the drip edge could be behind it?