Hello, We just had installed a Jotul F 500 V3 Oslo, we are having a very difficult time keeping the fire lit. It acts like we are trying to start a fire with the damper closed., but we have it fully open. It will burn for a couple minutes, fade-out and fill with smoke. our chimney was just cleaned. We are using small kiln dried kindling peices and newspaper to start. Sometimes the paper doesn’t even all catch. Any ideas??