I have a round heat forge lined with ceramic and coated with refractory cement hot bricks on bottom. Question: is it better to use a round forge or the square type?. I was told that a round forge with the burners at the inside edge will not cause steel to be unevenly heated thus causing hot spots that can mess up carbon on steel or alloys as the other forges do with the burners at the center of forge. Comments?...............Rey: