Hi Robert2004-1
I have made, under my personal account (S301, or userID #103475) a selection of VR broad and standard gauge tracks in 80lb/yd and 60lb/yd sizes (named VR 80lb and VR 60lb). This includes assets to make dual gauge track, however these will be two separate tracks that you overlap, so as to allow it to work correctly (including being able to straighten the track).
The 'dual gauge' track is assembled using your choice of the broad gauge tracks, and then the 'VR 80lb DG' or 'VR 60lb DG' track overlapped on the top to form the standard gauge line. There is a surveyor only rail that you can use to align to the 'common' rail of the track.
Regards