At left, the moulding needs to be coaxed over the lip of the driprail to allow a secure fit. Depending upon your comfort level, you can use the palm of your hand, a soft rubber mallet, or some other means to ensure a secure fit. We used a rubber mallet and a double-folded piece of cardboard for extra cushioning. Make sure you give the moulding a glancing downward blow to snap the moulding onto the driprail. Do not hit the moulding square or you will distort it.