Hello hello, I have decided on a kuma wood stove insert to replace a very old and inefficient stove insert in my basement. The install is happening next week however I have some questions on whether or not I am able to proceed with it based on the condition of my fireplace. There is a large portion of the brick hearth sitting under the stove that has either degraded or was maybe cut out to allow the current stove to slide in? I will attach some photos to help paint a picture. Just wondering if this is dangerous/needs repair? Thank you in advance!