Well, I was all set. Getting ready to install my old beast, and I could NOT get the damper to fit in the stove collar. Trying to fit an 8" Dura-Vent DVL damper on my old Timberline. The collar is 8" OD, with about an 7 13/16" ID. My cuticles are a bloody mess by now, so I ask- What is the trick? Do I need to have this re-crimped to a smaller OD? Can I cut it to squeeze the sides in, or is this thought wrong? I'm not messing with it anymore this evening, as I have mucho snow to blow if I ever want to get to work tomorrow, but I'm planning to be back at it tomorrow night. Thanks all. BTW, it is 8" DVL, and the damper was supposed to be a "drip-less" fit- inside the collar.