Excellent suggestion by Stew. Easy job for a small roofer, don't let them quote high, it's a half day job. Forget rotating glitter balls and the like, very expensive and tendency to jam. Since they only rotate when there is a wind then the air would be going thru the ball or roof vents anyway.
The other side of it might possibly be too much ventilation, allowing too much wet air to come in then condense inside the attic.
The other side of it might possibly be too much ventilation, allowing too much wet air to come in then condense inside the attic.