A different chimney sweep had wrecked my damper.  It became unhinged and was hanging down.  After complaining, I finally got a visit from the owner who came by to look.  Apparently, I wasn’t using it right.  Disappointed, I called Able Wood and Gas.  We talked for 20 mins and I sent him pictures.  Sid came by and fixed it.  I’ll only use Able Wood and Gas in the future.