Do you have any pics of how you have your turnbuckle setup ?One thing I struggled with is the open or closed operation of the thermostat controlled damper. I never felt like i could get it set so that it worked for every condition. So I modified it a bit. I added a turnbuckle in place of the chain that pulls the damper open. Now I can control how far the damper opens when the thermostat calls for heat. More open when it is colder outside, house is cold or when I am kindling a new fire, etc. Less open when I want to hold the fire longer, warmer weather, etc. Great addition to otherwise completely stock setup.