After 3 years of experience smoke coming in my side entry door and seeping in other cracks around my house, I have decided i may want to change my exhaust. The stove shop installed my stove with 1 foot straight out of the wall termination. As a result smoke blows into my house. I'm thinking of going up maybe 3 feet and with a tee of course and a cap. This should keep the smoke from coming in my house and create a draft which will eliminate any smoke back if the power goes out. My current pipe is Duravent Pellet Pro. Anyone know where I can get good prices?