Well, I spent some time this morning scraping the peeling edge of clear coat until it would no longer lift.
New Plan-- As I mentioned in an earlier post, the roof surface clear coat is completely gone. The only remaining clear runs about 2-4" above the gutter. I'm going to use Zep on the entire roof right down to the gutter. Worst case, clear continues to peel, and I need to scrape down 2-4" to the gutter & Re-ZEP.
I also mentioned earlier there was a past repair to the radius. It looks like in that area, Both factory, and repair clear were failing.
My thought is to keep the clear coat off the roof, and rely on the Zep for protection.