I've noticed that I have a back draft when I lit the stove the past few days. I realized that this must be coming from the property line of 50 foot trees near the chimney. I've been able to get a fire going but its been trying. Anyway, before the winter rolls in and it gets windy I decided to order a Vacu Stack Chimney cap. I found this really cheap site online which is significantly less than anyone else not sure if you guys have heard of it www.fireplaceessentials.com (just thought I'd share) Happy Thanksgiving!