The shower skylight leak might have been a more serious indicator than you would think. I had my skylight crack and didn't notice for awhile. I didn't see anything inside, but shortly had some delamination on the outside fiberglass under the skylight area. Checked with Winnebago when we were there and it would be $14,000 to fix, a complete new driver's side wall.
2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade