Ed,
I believe you are talking about transition tracks, and yes there is a FasTrack transition track for O gauge traditional tubular, the transition track you are looking for is a tubular O guage transition track to 027, Lionel did make them. Most people built their own however. As far as I know there is no FasTrack transition to 027 Tubular. You must transition from FasTrack to O Gauge tubular then transition again into 027.
I use the FasTrack transition to O guage tubular, every time I put a 711 or 072 Lionel switch into my FasTrack layout, they work perfectly.
PCRR/Dave