I recently tore a VC Resolute Acclaim completely down and rebuilt it with new fireback/damper/refractory/firebricks and misc odds and ends. I ground out the old cement and applied the new stuff liberally when refitting everything back together. I've had it puff back a couple times and smoke comes out from under the top on the sides and the front. Doesn't seem like it should be happening. Any input? I am going see if I can see a suction by using a vaporizer or incense. Not sure what else to try. Other than this little issue, it burns well and I can damp it right down so it can't be leaking much. If it is leaking should I just cement what I can from the inside?