Thanks for all the input guys. My biggest concern is elevating my curves. If I use the N scale cork there is a decent void under the nail hole. I just have to watch that I don't push the nail in to far andbend the tie resulting in the track getting out of gauge.
Ed. Your method sounds great. I have the means of cutting homasote at work (cabinetmaker) so that is something I will consider. I just have a bunch of this vinyl bed. I guess I could just sell it.
Also I will talk to the makers of the vinyl bed. Good idea Old Goat.
Thanks again,
Ralph