Thanks all, it's a bog standard crossover consisting of two sets of points facing each other creating a sort of zig zag shape if you will. The issue I have is that these points need to be controlled from the outer circuit when accessing the yard, with the points set to curved, or as two independent loops with the blades set to straight. If I fit insulated rail joiners then option two works but not one, if I don't then the reverse is true. I'm just scratching my head how I can achieve both depending on the routing required. I'm increasingly being drawn to just going DCC and eliminating these quirks, at this stage of proceedings it would be relatively straightforward.