Just to follow up on this one - I got a call last night from Filson. The guy on the line said they'd received my coat (a cover cloth "Foul Weather Jacket") and evaluated it, and decided it wasn't worth attempting to repair. So, he said, would you rather we sent you a new one, or use the credit of that model toward another new jacket? They also suggested I try shelter (heavier) cloth.
After looking more in depth, I decided on the cover cloth "Field Jacket" - a trifle longer, separate handwarmer pockets, a rear game pocket, and it fits the vest liner and hood I'd already purchased for my Foul Weather jacket. In fact, they introduced the Field Jacket about 2 months after I got my Foul Weather Jacket, and I was bummed that they hadn't offered it when I was picking out my first coat.
So, I paid them $21 to cover the difference in the value of the coats, and they're sending it my way.
I'm VERY pleased with the no-nonsense customer service, and I'm looking forward to the new coat.