I purchased a slightly used buck 91 Saturday. I am going to use it as a insert I have to purchase the trim kit hopefully from the local dealer. As I was searching for somewhere to buy this I ran upon this forum. I had in a way thought that there was a better way to install the insert and began reading about the block off plate that was recommended. I have just moved in the home and took the old gas logs out today and had a cousin that was a brickmason come out to look over the chimney it has never appeared to have been used. the house was built in 91 and the gas logs was dated 94. But looking at the damper would it be alright to if I can reach it to make a block off and screw it to the damper housing. Will the damper slide out of the frame where I can take it out? The outlet on the stove is 8 Inch and Would like to use a regular pipe and a flex fitting of some type to be able to pull the insert when cleaning. The chimney does have tile and would eventually like to run pipe up it later but can't afford for now. but would it be practical to mount to the damper housing and try to retrofit a pipe to it or do i need to make the plate lower towards the lip of the opening like the hearth diagram of building one of these plates. Thanks for any advice.