Thanks everyone!
Regarding eternabond it's easy to get mixed reviews. Lots of online reviews of people having water work it's way under and it turns into a mess. My old camper we used it and it started looking ragged around the edges. Not saying it does not work, I just figured I would stay with the standard sealant unless needed. That said, it is tempting to just cover the front and rear seam with eternabond. I just hate seeing some of the pictures of moisture underneath the tape.
Anyway, thanks for the feedback so far! Roof care seems to have a lot of opinions. Only consistent opinion is it needs to be taken care of.