Seals working properly does not mean perfection. They can get caught on the edges and need to be manually spread or twigs can get caught when open and then closed. Taped edges can come loose. A particularly hard side rain can let moisture in fairly easily.
Water finds entrances a long distance from where wood rot occurs.
Take the posters advice and try to locate it after a rain or climb up there and simulate it!
Condensation generally shows up in wall board crimping, bubbles, etc before the wood base would rot. That's a LOT of concentrated moisture.
2nd, spend $$$ to go to this year's FR Rally in Indiana. They will fix it there or if not, you have an audience of 500 plus owners to SCREAM TO.
I think FR will try to make it right. They have helped MANY folks who were OUT OF WARRANTY.....
U,S. Army Signal Corps slogan:
"Think, Go, Do"
You completed part 1 of 3. 👍🏁
Go forth and make this bad experience a corrected one!