Hey guys I picked up all the material for this project and plan on starting it this week. This is my first build so I have a couple more questions before I get started. For the rail, I am using 1" high density foam. If I leave 2" of foam on the outside edge, and 1" on the inside edge, how much bigger will my rail be from my original 5" width of plywood once I wrap it with the vinyl upholstery? I want my racetrack and rail to be the same width. Also, a lot of people weren't a fan of racetrack because of the height difference between the playing surface and the racetrack. Well what if I used 1/2" or 5/8" plywood for my playing surface and 3/4" for my racetrack? That way once I glue the 1/4" foam on the playing surface and put cloth on it, the height difference would be either flush or only 1/8" difference. Has anyone done this before?