This seems to be a redundant question/topic on this board so this will be the last time I personally bring it up. I installed Simpson Duravent PelletPro vent from my Big E and after sealing all the joints prior to installing, even the lock-joints and the manufactured seems, we still have smoke in the house! I even ran a bead of sealer around the joint on the outside of the vents to be certain. Is this product just not that good and I need to select another vent system and if so what would everyone recommend? Thank you!