ok all knowing OB, another lawn problem for ya. So I have this pecan tree in my back yard that hasn't been in the bests condition since moving in. It has been kinda week the first few years but this last fall when it dropped its leaves, on section turned brown but the leaves never fell. Fast forward to spring and the leaves finally fell about the time the rest of the tree started to bud. Now the whole tree is green except for that section, it appears dead. Any ideas or tips for what to do? Arborist? Cut out the dead part and move on? Here is the tree