During the summer I replaced the fire brick in my stove, floor, sides, and back. I had some that were cracked, chipped, and the price was right, So I replaced all of them. Anyway.... I had a few good ones left over-- so my question is, Would it help or be benefitial to add firebrick above the angle iron on the sides and back of the inner stove walls? Again steel stove, 24 wide, 17 high 17 deep firebox, so after the 1 brick high, theres room for bricks to be added sideways above iron, on both sides and back. Would this help preserve the steel walls, help retain more heat in firebox below steel baffle, or would it make a difference either way, anyone do this as an experiment with the older stoves? Comments, answers would be greatly appreciated. Thanks