Hi Daniel,
Reverse curves can be testing but don't really present problems for our narrow gauge stock, however as almost anything that will run on gauge 0 and 1 tracks we hope are catered for, if there is an issue the main line dual gauge track has only straights and ten foot plus curves should take care of it.
Yesterday, the gauge 1 sidings were completed as far as track work is concerned, I only now have to make a gauge 0 point for the dual gauge track to connect it to the inner gauge 0 circuit. This could be interesting as the dual gauge track uses code 250 rail, the gauge 0 track is code 200, and the dual gauge track sleepers are twice the height of the gauge 0.
Take care Tony.