I recently purchased a old breckwell p23i and im looking to install it into my basement. Since its in the basement and not my main heat sorce im going to give installing it myselft a whirl im a mechanic by trade and do woodcraft for fun so im very handy. i do have experiance with pellets stoves as I have harmon p35i on my first level but that is a different beast and was proffesionally installed. My question is from the bottom to the top i have 25' of distance im guessing i need a 30' liner ? My other questions are should i install a tee and do i need to add extra length to the liner for when i pull the stove out for deep cleaning??