http://www.homebuildingandrepairs.com/stairs/index.html Click on this link for more instructional videos about stair building, repairs and new home construction. Here's a helpful video for stair builders, architects and do-it-yourselfer's who continue to create future home repairs and waste money by making the simple mistake. Notching the bottom of stringers so that you can install a kicker can often create a variety of different problems, including deformed stairs, wood rot and termite damage.