Our F500 vermiculite baffle developed a crack down the center, front to back last winter and I finally got around to ordering a new one. When we picked up the replacement I mentioned to the dealer my concerns with the mineral wool blanket. In case I should booger up the old blanket and cannot reuse it, how long would it take to get a new one? He told me that it is not critical to try to reuse the old one and that it is there for Jotuls efficiency qualification. If it was not reinstalled, efficiency is minimally impacted and I could expect better draft. He made it sound like it is just a moot detail in the stove's function and it is really not needed. They can easily aquire one for me, so availability is not an issue...but should I even bother with trying to reuse the old one?