ive been toying with the idea of installing an insert for quiet a while.theres a used cb1200 on craigslist at the moment for $800 and its nine years old.i went to look at it and its in pretty good shape.i didnt get to see it run but guy says it runs good with no issues other than when they removed it from fireplace something broke off from the exhaust outlet at rear of stove.im sure its an easy fix on that.after doing a little research im a little confuse about the shroud that is mentioned in the install manual.is it needed.can i just slide the stove into the fireplace opening and connect liner right to the exhaust outlet or do i need the shroud kit and offset pipe to do the install.this is a sstone faced fireplace with fire brick walls and 25ft chimney.any feed back on the stove itself would be awsome too.if i go back i will bring a t-stat with me so i can see it run