I am a newbie to the forum so please forgive me if I am not in right thread. Or maybe someone can steer me in the right direction. Just had a 28 foot chimney done and having fireplace insert installed. However, the contractor put the angle irons in backwards. The liner inside the chimney is to the back and our stove opening is in the front. We were told only option is to bust out the brick and cut out the angle iron but I don't want to compromise the strength and integrity of our 28' brick chimney. Is this fixable??