Hi, I have an brick openfire that i am placing a stove into. however the height of the openfire is not high enough for the pipe at the back of the stove if we want a hearth under the stove. There is a lintle going across the top of the open fire. Is there anyway of removing the lentil neatly and holding up the bricks on top of the lentil at the same time. We hope to brick up the opening of the open fire with bricks.