Using this Walthers Modern Wood Crossing kit is super easy. First, pick a straight stretch of your HO scale track where you want to install the crossing. You don't need to cut or replace your existing track, just place the crossing parts right on it. You can choose to build two single - track crossings or one double - track one according to your layout needs. When it comes to customizing, the molded cut lines on the underside make it a piece of cake. As for maintenance, keep it away from excessive moisture as wood can warp. If it gets dirty, you can gently clean it with a soft brush. Remember, the Code 83 and Code 100 track and the Cornerstone Street System paving are sold separately, so make sure to get them if you need them for a more complete look.