Anyone needing any type of tree / shrub pruning, or just general advice regarding the health and condition of the trees in their yard should contact Bartlett Tree Experts (www.bartlett.com).  Much of their staff are trained arborists and take their knowledge of trees very seriously.  This company is almost 100 years old and provides excellent customer service.  Ask for Jeff Kish, he is the local manager in Raleigh (919) 782-7803.