Hi, we have a three year old log home with hemock logs not siding. I have one log approximately 18 inches in lengh between a window and fire chimney. In the center of the log is a check that I can not stop from leaking rain water. I have sealed all around the chimney, put new flashing on the window casing. I can not trace the water from coming any direction cause everything round it is dry. The water just seem to appear straight through the log. I have chaulked the outside log about 5 times. Can