Just an update...
I finally had some nice, warmer weather and time to climb up on the roof and get to the repair.
Apparently the previous owner had some work done and must have had some leakage along the front of the roof where the rubber meets the front fiberglass cap. (I'm calling the roof "rubber" to simplify things knowing I'm technically not correct so please forgive me.) There was a LOT of caulk just globbed across the hold-down strip. I spent a lot of time scraping that off and cleaning any excess. When I took the screws out of that hold-down strip, the screws across the drivers side half were not securing the fiberglass to the plywood. That left a gap up to 3/8" and I'm sure led to the lifting of the rubber from the wood. That started it all. The vacuum caused by the wind flowing over the top lifted the rubber. I was able to re-secure the rubber to the roof and across the front under the hold-down strip. There appeared to be double sided tape under the rubber, at the rear of the fiberglass front cap. I used an outdoor double sided tape there. When I fastened the hold-down strip, I used a little larger screws to get them to hold in the wood. The original screws were very small in diameter and were countersink head. I went with button head screws that required me to drill the holes only slightly larger. I was prepared to add more screws if they still didn't hold but didn't need to. They cinched up fine. After securing the hold-down strips, I trimmed any excess rubber across the front and then applied a fillet bead of caulk to both edges of the hold-down strip.
Everything looks "good-to-go". The test will come when I travel for an extended time at highway speed and encounter any heavy rain. But I feel good about the present outcome.
This wasn't really difficult, but never having done this work before, I was a little apprehensive. Turns out it wasn't too bad.
One really good tip. Wear sunglasses! The glare off the white roof is harsh!
My thanks to those who responded with tips and advise.
RTsRV
