Wencombe
Hi Jon,
In answer to how I got the transition curves is with a long (over 8ft) piece of flexible metal about half an inch wide on edge.. I set the beginning of my curve (over the stream) at my minimum radius (3ft) with a tracksetta, put some pins in the baseboard to hold the metal on edge I then allowed the curve to get larger and played with it about where the points are so they matched the large radius points (5ft) and and the pinned the metal up to there, and the carried on allowing the radius to get larger through where the platforms are ie almost straight. And the carried on and out past the Dairy. Sorry it is not well explained, easier to do than write about.
As to how I operate it, at the moment I just let the trains run, but I am working on a timetable based on Churston on the Kingswear line. Unfotunately I do not have enough room for staging (Iwould love it) so for some trains I am going to have to fiddle.