The problem with the front fender tail rust is a function of design, however after installing replacement tails on these fenders in the past, I have discovered that enlarging the hole at the bottom of the fender tail support member will enhance the drainage of water and debris from this area. Additionally, by the time we take possession of this year truck it has been on the road for nearly 40 years without any preventative maintenance. After replacing the damage and properly undercoating or painting, it is imperative to ensure that there is no dirt or debris accumulated in the brace pocket. Attention to this area will eliminate future problems with this area.