I bought our PUP last year knowing I would need to rebuild the roof side panel. I successfully did that this spring by removing the rotting OSB from the skin and reapplying it to new wood and reattaching. I layered butyl tape under the trip pieces and then sealed EVERYWHERE with Dicor lap sealant. Although it went on beautifully for most seams, it seemed to never set properly right at the ends where it stayed tacky and some got ripped off from a tarp or falling leaves, revealing the butyl under. I've kept it dry so far, but rainy season is coming again and I do not want to deal with more leaks. SO after scouring the site, my plan is to just apply Eternabond 4" tape the length of roof, attaching to the top of the trim piece lengthwise and the roof. I am planing on wiping it down first, especially the roof part, but just applying directly over the dicor/butyl line in the middle. I really dont want to be cringing the entire next camping trip when it starts to lightly rain. I dont think I need Grizzly grip over the whole shebang because the rest of the roof is fine, its just this seam I'm worried about on top.