As they are on the way out, does anyone know why MTH never made any O-63 track in either their RealTrax or ScaleTrax lines? I'm guessing something to do with track geometry, but that's still a huge gap between O-54 and O-72, especially when other manufacturers (roadbed and no roadbed) were making track in that O-60/O-63 range. Even if it is geometry, that's still an 18-inch differential.
I looked thru the search feature to see if this topic had been raised before, but I couldn't find it.