I had posted a while back about the install we're working on. The chimney top is now re-laid and the thimble is in. I ordered a kit from Rockford, but my dad wanted to have a local shop fabricate the chase cover. My question is, how do you actually fasten the liner to the chase cover? Rockford's video makes it sound like there is a hose clamp , but I can't see it in the video which is actually more of a slideshow. If it is a hose clamp, do you just make holes in the collar of the chase cover to run the clamp through? Pictures would be helpful. I attached pictures of the chimney top, and thimble for anyone that saw the previous thread and is interested.