I got all of the seats out of my 93 bus and now I'm working on cleaning it up. I filled a few brown paper bags with all of the junk laying around on the floors and stuff that fell out of the seats. So far, I have found 79 cents!!! I told my wife that we are already making a return on the bus investment. Anyways, some of this stuff on the walls is pretty stubborn. I was in there yesterday with a big gas powered power washer trying to get that stuff out and it wouldn't budge. Also, I was under the impression when I bought the bus, that buses had plywood between the metal on bottom, and rubber on top. My bus is simply a metal floor with rubber on top. I guess that most people put plywood down on top of that right? Should I pull up the rubber part? How about the aisleway part? If I should use plywood, how thick should it be? Thanks!